Archaeologists working in the Andes Mountains recently excavated a bur

Based on the position of constellation now, the argument is making a conclusion that andeans may have built the temple as a religious representation of the fox ..but to make this prediction one need to be sure of whether the position of constellation was same 4000 yrs ago as it is now ....This pre-thinking leads to A as answer .

Hello Verbal Experts,

Could you please explain this question in detail why A is correct and why other options are wrong?

Thanks.

Hi snjainpune,

I'd be happy to clarify this question for you. The answer, simply, is negation, which is turning the answer into its opposite form. If the new answer destroys the argument, this is your answer for the question.

Archaeologists working in the Andes Mountains recently excavated a buried 4,000-year-old temple containing structures that align with a stone carving on a distant hill to indicate the direction of the rising sun at the summer solstice. Alignments in the temple were also found to point toward the position, at the summer solstice, of a constellation known in Andean culture as the Fox. Since the local mythology represents the fox as teaching people how to cultivate and irrigate plants, the ancient Andeans may have built the temple as a religious representation of the fox.

-- The blue is a premise, which builds up to the green, our conclusion.

Which of the following is an assumption on which the argument is based?

(A) The constellation known as the Fox has the same position at the summer solstice as it did 4,000 years ago. -- The constellation known as the Fox does not have the same position at the summer solstice as it did 4,000 years ago
(B) In the region around the temple, the summer solstice marks the time for planting. -- In the region around the temple, the summer solstice does not marks the time for planting
(C) The temple was protected from looters by dirt and debris built up over thousands of years. -- The temple was not protected from looters by dirt and debris built up over thousands of years.
(D) Other structural alignments at the temple point to further constellations with agricultural significance. -- Other structural alignments at the temple do not point to further constellations with agricultural significance
(E) The site containing the temple was occupied for a significant amount of time before abandonment.The site containing the temple was not occupied for a significant amount of time before abandonment

Based on our conclusion, "the ancient Andeans may have built the temple as a religious representation of the fox.", which one of the above destroys this argument? Option A! This says the temple may have been built for a different system, but is now pointed towards the fox. The rest of the options are, fortunately, out of scope and can thus be eliminated. Does this help?

Premises:
Archaeologists excavated an old temple containing structures that align with a stone carving on a distant hill to indicate the direction of the rising sun at the summer solstice. Alignments in the temple were also found to point toward the position, at the summer solstice, of a constellation known in Andean culture as the Fox.
Local mythology represents the fox as teaching people how to cultivate and irrigate plants

Conclusion: the ancient Andeans may have built the temple as a religious representation of the fox.

(A) The constellation known as the Fox has the same position at the summer solstice as it did 4,000 years ago.

This is certainly an assumption of the argument. If the Fox does not have the same position as it did 4,000 years ago, the entire argument falls apart. Then the alignments would be pointing to something else or they wouldn't be alignments pointing to something. Then the point of representation of the fox does not arise.

(B) In the region around the temple, the summer solstice marks the time for planting.

The importance of summer solstice is not discussed and is irrelevant.

(C) The temple was protected from looters by dirt and debris built up over thousands of years.

Dirt and looters are irrelevant to the argument.

(D) Other structural alignments at the temple point to further constellations with agricultural significance.

Not an assumption. Doesn't matter what the other alignments point to.

(E) The site containing the temple was occupied for a significant amount of time before abandonment.

Again, not an assumption. Even if it were not occupied, it doesn't break out argument.

Answer (A)

Official answer:

Argument Construction

Situation A recently excavated 4,000-year-old temple contains structures that point toward the positions at the summer solstice of both the rising sun and a constellation known in local culture as the Fox. Local mythology represents the Fox as teaching people how to cultivate and irrigate plants.

Reasoning What must be true in order for the argument's premises to suggest that the temple was built to religiously represent the fox? The argument's premises are all observations about current conditions: the current alignment at the summer solstice of the temple relative to the sunrise and to the constellation known as the Fox, the current local name for a constellation, and current local mythology. To support the conclusion about the temple's original purpose, the argument has to assume that all these conditions may still be essentially the same as they were 4,000 years ago when the temple was built.

Option A is Correct. If the constellation's position at the summer solstice relative to the temple is different from what it was 4,000 years ago, the temple must not have been aligned to point toward it when it was built. In that case, the argument's justification for associating the temple with that constellation and with the fox is undermined.

Why are B to E wrong?

B - This does not have to be assumed for the argument to succeed, though if true, it might strengthen the argument by providing additional evidence associating the temple with the mythological fox as a teacher of agriculture. But the argument could be just as strong if the solstice were instead associated with agricultural activities other than planting.

C - Even if the temple was not protected from looters, the conditions described in the argument's premises may still be the same as they were 4,000 years ago.

D - This is not assumed. Additional structural alignments pointing to different constellations associated with mythological beings other than the fox might weaken or even undermine the argument's justification for associating the temple with the fox specifically.

E - The argument makes no assumption regarding how long the temple was occupied, or even regarding whether the temple was ever occupied.

VeritasKarishma GMATNinja

Conclusion : Andeans may have built the temple as a religious representation of the fox.
Premise : Structures (within the Temple) align with the position of the fox constellation during the summer solstice

One way i thought to destroy the argument was to confirm -- if the temple was used for any other purpose (other than representing the fox constellation) ? -- Were there other objects / structures pointing towards other constellations ?

Because if there were other structures pointing towards other constellations or other stars as well -- then the conclusion breaks as the conclusion is all about declaring the temple as a representation of the "Fox" only

Enter option C...if negated

-- If the temple was not protected by robbers -- and items have been looted -- then the looters may taken objects of relevance / may have taken objects that align with other constellations other than the fox

Hence i thought -- this destroyed the argument

Thoughts ?

The conclusion doesn't say that it was built for no other purpose. Perhaps it had some other purposes too. In fact, the argument says that it has structures pointing towards the rising sun too. We have to figure out whether it was built as a religious representation of the Fox or not. Option (C) doesn't help in that but option (A) is needed. If Fox's position was different 4000 yrs ago, the temple was not built to point toward it.

Take another look at (C):

(C) specifies exactly how the temple was protected from looters -- by a buildup of dirt and debris. Does that HAVE to be true in order for the argument to be valid?

Not necessarily -- maybe the temple was protected in some other way (snake pits? pressure-triggered booby traps? massive rolling boulders?). Because the argument doesn't depend the temple being protected specifically by dirt and debris, we can't say that the argument is based on the information in (C).


I hope that helps!

Passage Analysis

• Archaeologists working in the Andes Mountains recently excavated a buried 4,000-year-old temple

o An ancient temple is recently unearthed from the Andes Mountains by archaeologists.
o The temple is estimated to be 4000-year-old.

•containing structures that align with a stone carving on a distant hill to indicate the direction of the rising sun at the summer solstice.

o The unearthed temple consists of a number of structures which are geometrically in line with a stone carving on a hill far away.
o This alignment represents the direction where the sun rises on the day of summer solstice.

• Alignments in the temple were also found to point toward the position, at the summer solstice, of a constellation known in Andean culture as the Fox.

o The alignments in the temple were observed to lead to a point in the sky.
o This point is where a constellation known as the Fox in Andean culture is placed at summer solstice.

• Since the local mythology represents the fox as teaching people how to cultivate and irrigate plants,

o A cause and effect are presented. Local mythology says the fox taught people agriculture.

• the ancient Andeans may have built the temple as a religious representation of the fox.

o Therefore, it is possible that the Andeans 4000 years ago built this temple to manifest the fox religiously.

Conclusion: The ancient Andeans may have built the temple as a religious representation of the fox.

Question Stem Analysis
This question asks us to identify the assumption on which the argument is made.
Pre-thinking

Falsification Question
In what scenario is it possible that the ancient Andeans may not have built the temple as a religious representation of the fox?
Given that

• The temple is 4000 years old.
• It contains structures that align with a stone carving on a distant hill to indicate the direction of the rising sun at the summer solstice.
• Alignments in the temple pointed toward the position of a constellation known in Andean culture as the Fox, at the summer solstice.
• The local mythology represents the fox as teaching people how to cultivate and irrigate plants.

Thought Process
The author talks about an ancient temple which is excavated from the Andean mountains, and the structural alignments that links the temple with the summer solstice and the constellation called the fox in the Andean culture. The author thinks that since the fox is said to have taught humans to cultivate and irrigate plants in the local mythology, the temple possibly is meant to religiously represent the fox. This conclusion is dependent on the existence of three factors 4000 years ago-the position of the constellation in alignment with the temple, the constellation’s cultural association with the fox, and the relevance of the fox in local mythology.

Falsification condition#1
What if the constellation has changed its position in the sky over 4000 years? In other words, what if the Fox constellation was not in alignment to the temple 4000 years ago? In that case the facts hold, but the conclusion breaks down.
Assumption#1
The Fox constellation was in alignment with the temple 4000 years ago.

Falsification condition#2
What if the ancient Andean people who lived 4000 years ago did not link the constellation to the fox? Here also the facts remain intact, but the conclusion cannot hold.
Assumption#2
The link between the constellation in alignment with the temple and the fox was present in Andean culture 4000 years ago.

Falsification condition #3
Imagine the fox did not have any divine associations in the Andean culture 4000 years ago. Then there is no point in connecting the temple with the fox. This will break down the conclusion.
Assumption#3
The fox had divine associations, which may or may not be associated with agriculture, in the Andean culture 4000 years ago.

Answer Choice Analysis

(A) The constellation known as the Fox has the same position at the summer solstice as it did 4,000 years ago.
CORRECT
This statement is in line with our assumption 1 and therefore the right answer.

(B) In the region around the temple, the summer solstice marks the time for planting.
INCORRECT
This statement need not be true for the argument to hold. Hence this cannot be the correct answer.

(C) The temple was protected from looters by dirt and debris built up over thousands of years.
INCORRECT
This is completely out of the context of the argument. Hence, this cannot be the correct answer.

(D) Other structural alignments at the temple point to further constellations with agricultural significance.
INCORRECT
This additional information does not support the conclusion. Therefore, it cannot be the correct choice.

(E) The site containing the temple was occupied for a significant amount of time before abandonment.
INCORRECT
This piece of additional information is not necessary for the conclusion to be right. Therefore, this cannot be the correct answer.

My problem with A is that the passage states - "Alignments in the temple were also found to point toward the position, at the summer solstice, of a constellation known in Andean culture as the Fox."

I read this to mean that the position is where the Fox was in Andean culture, not where the Fox is now. Hence the current position should not matter. Why is my interpretation wrong?

The amount of time that the temple was occupied is irrelevant to the argument. Eliminate (E).


GMATNinja Thanks for the explanation.
You had mentioned that the conclusion has the word "may" in it, could you explain how it could affect a strengthen/weaken question or any other CR ques
thanks

GMATNinja KarishmaB
Why D is incorrect?

Archaeologists working in the Andes Mountains recently excavated a buried 4,000-year-old temple containing structures that align with a stone carving on a distant hill to indicate the direction of the rising sun at the summer solstice. Alignments in the temple were also found to point toward the position, at the summer solstice, of a constellation known in Andean culture as the Fox. Since the local mythology represents the fox as teaching people how to cultivate and irrigate plants, the ancient Andeans may have built the temple as a religious representation of the fox.

(D) Other structural alignments at the temple point to further constellations with agricultural significance.

The main conclusion is the reason to build temple - the ancient Andeans may have built the temple as a religious representation of the fox and the fox has some significance (it represents as teaching people how to irrigate plants)

Other structural alignments points towards constellation with agricultural significance and since fox also has some agricultural significance (how to irrigate plants), this statement does strengthen the conclusion that temple may be have built as a religious representation of fox.
Negation - Other structural alignment doesn't point to constellation with agricultural significance, my belief in the conclusion decreases bcz the reason for building temple might be different now (no religious angle)

Can you please help to identify where I went wrong?

The question asks for "an assumption on which the argument is based," NOT for a something that strengthens the conclusion, as you've mentioned in your analysis.

Does (D) strengthen the argument? Actually, it really doesn't -- if the temple pointed to multiple constellations, then it is less likely that the temple was built to represent the fox in particular.

Even if you really stretch your imagination and say that these other constellations hint that the temple has an agricultural theme and dismiss the lack of a connection to the fox, all you've argued is that (D) provides some weak support for the conclusion. (And again, the conclusion is about the fox in particular, so we're really on thin ice here).

This interpretation doesn't meet the criteria "an assumption on which the argument is based" -- which is a kind of assumption is something that absolutely MUST be true in order for the author's argument to hold up.

(D) doesn't HAVE to be true for the author's argument to hold up. Maybe there are other constellations involved, and maybe not -- either way, it's possible that the temple was built as a representation of the fox. Eliminate (D).

(A), by contrast, DOES need to be true -- the author's whole argument is based on the temple's alignment to the Fox constellation, so we NEED to assume that this alignment was the same when the temple was built.

(A) is the correct answer.

I hope that helps!

1. GMATNinja KarishmaB MartyTargetTestPrep ThatDudeKnows GMATIntensive why is choice B Correct? I cannot figure why this need not be assumed. We know that planting is associated with Fox and hence the temple could be a representation of Fox.

2. Also wording in sentence 2 is not clear. What does 'to indicate' modify? Does it mean it was excavated to indicate that the temple points to the sun or some othe rreason? Also did not get the relation to the distant hill- why does that matter and why is it presented?

1. Would your logic not hold even if the summer solstice is the time for harvesting? How does the argument assume that the summer solstice is the time for planting?

2. The distant hill is where the stone carving is that indicates the direction of the rising sun at the summer solstice. I don't think any confusion you may have had about the sentence structure would have impacted how you'd think through this question or offer much actionable insight to use on other questions, so I wouldn't sweat it.

1. No because the passage is about Fox being associated with teaching about how to irrigate and cultivate plants
2. Well the meaning is not clear. It does not seem to indicate that the distant hill pointed towards the sun, rather it seems that the temple was excavated to indicate the direction of the rising sun and that hthis temple had carving similar to the distant hill. Again though, I do not understand what is the purpose of the distant hill being introduced here? Also I do not undertand why you think the stone carving is at the distant hill to indicate position of the sun, and NOT ON THE TEMPLE ThatDudeKnows

Cultivating and irrigating involves a lot more than only planting. How did we narrow the scope from the entirety of cultivation and irrigation to be solely about planting time?