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Understanding the argument -
Every year, the coffee rust causes extensive devastation in many major coffee producing regions of the world, leading to declines in the yield of coffee. - Fact
In order to address the attacks by coffee rust, these countries are currently debating on enforcing certain changes in the techniques traditionally applied in coffee farming. - Fact
Thus, if these countries succeed in putting into effect these changes, a significant increase in the revenues of the coffee farmers is ensured. - Conclusion. Conditional. Success in putting these changes into effect is a sufficient condition or enough to 100% guarantee a significant increase in the revenues.

Option Elimination - Weaken.

A. Takes it for granted that the removal of a cause behind low yields will definitely lead to higher revenues. - ok.

B. Assumes that changes in traditional farming techniques is the only way of addressing the devastation caused by coffee rust. - no it did not assume that. Out of scope.

C. Suffers under the assumption that the changes in techniques traditionally applied in coffee farming can be undertaken successfully. - No. He gives a conditional so he doesn't assume that. Distortion.

D. Fails to draw the correct relationship between the expected increase in coffee yields and subsequent revenues. - The argument draws the correct relationship. Opposite of whats stated in the argument.

E. Does not consider the impact of changes in techniques enforced in farming of other crops in the same regions, on the yields of those crops. - "Other crops in the same regions" is out of scope.
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Bunuel The stem says "significant revenue increase" there is a chance that removal of the obstacle results in a minimal improvement in the revenue too right?
Option D states that the relationship established is false and and if its just a small increase or a negligible increase (increase nonetheless) a "significant" increase is undermined seriously too?
Kindly help me out here.

ktzsikka
Every year, the coffee rust causes extensive devastation in many major coffee producing regions of the world, leading to declines in the yield of coffee. In order to address the attacks by coffee rust, these countries are currently debating on enforcing certain changes in the techniques traditionally applied in coffee farming. Thus, if these countries succeed in putting into effect these changes, a significant increase in the revenues of the coffee farmers is ensured.

The reasoning in the argument is most vulnerable to criticism on the grounds that the argument

A. Takes it for granted that the removal of a cause behind low yields will definitely lead to higher revenues.

B. Assumes that changes in traditional farming techniques is the only way of addressing the devastation caused by coffee rust.

C. Suffers under the assumption that the changes in techniques traditionally applied in coffee farming can be undertaken successfully.

D. Fails to draw the correct relationship between the expected increase in coffee yields and subsequent revenues.

E. Does not consider the impact of changes in techniques enforced in farming of other crops in the same regions, on the yields of those crops.
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Every year, the coffee rust causes extensive devastation in many major coffee producing regions of the world, leading to declines in the yield of coffee. In order to address the attacks by coffee rust, these countries are currently debating on enforcing certain changes in the techniques traditionally applied in coffee farming. Thus, if these countries succeed in putting into effect these changes, a significant increase in the revenues of the coffee farmers is ensured.

The reasoning in the argument is most vulnerable to criticism on the grounds that the argument


The argument goes from “new techniques will reduce coffee rust and raise yields” to “revenues are ensured to rise.” That jump is the vulnerable point.

A. Takes it for granted that the removal of a cause behind low yields will definitely lead to higher revenues.

Yes. Higher yield does not guarantee higher revenue: prices can fall if supply rises, and the new techniques can raise costs. So revenue is not “ensured.”

B. Assumes that changes in traditional farming techniques is the only way of addressing the devastation caused by coffee rust.

No. The argument never says this is the only way, it just says they are debating these changes.

C. Suffers under the assumption that the changes in techniques traditionally applied in coffee farming can be undertaken successfully.

No. The conclusion is conditional on success (“if these countries succeed”), so it does not assume success.

D. Fails to draw the correct relationship between the expected increase in coffee yields and subsequent revenues.

Too vague. The specific flaw is exactly what A states: yield up does not guarantee revenue up.

E. Does not consider the impact of changes in techniques enforced in farming of other crops in the same regions, on the yields of those crops.

Irrelevant to the claim about coffee farmers’ revenues.

Answer: (A)
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Adit_
Bunuel The stem says "significant revenue increase" there is a chance that removal of the obstacle results in a minimal improvement in the revenue too right?
Option D states that the relationship established is false and and if its just a small increase or a negligible increase (increase nonetheless) a "significant" increase is undermined seriously too?
Kindly help me out here.



Yes, a merely small increase would undercut the claim of a significant increase, but that is still the same core flaw as (A): the argument treats higher yield as guaranteeing a big revenue gain.

(D) is too vague because it does not tell you what is wrong with the relationship. (A) pinpoints the exact mistake: removing rust (or raising yield) does not ensure a significant revenue increase because price and costs can offset the gain.
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You're right that there's a gap between yield and revenue. But let's look at what each option actually says:

Option D says: "Fails to draw the correct relationship..."
→ This is vague. WHAT's incorrect about the relationship? D doesn't specify.

Option A says: "Takes it for granted that removal of a cause behind low yields will DEFINITELY lead to higher revenues."
→ This is precise. It identifies the assumption: that fixing yield problems automatically guarantees revenue increases.

The Core Issue:
The argument's flaw isn't about "how much" the revenue increases (significant vs. small). It's about assuming ANY yield improvement leads to revenue improvement at all.

Think about it:
• Even if yields DOUBLE, revenue could DECREASE if coffee prices crash
• Even if yields improve, revenue could FALL if farming costs skyrocket

The argument treats "better yield" as automatically meaning "better revenue" - that's the flaw A identifies.

Why D Doesn't Work:
D says the relationship isn't "correctly drawn" - but that's too vague. It doesn't tell us WHAT the argument wrongly assumes. A does: it assumes removing the obstacle to yields will DEFINITELY increase revenue.

Answer: A

Adit_
Bunuel The stem says "significant revenue increase" there is a chance that removal of the obstacle results in a minimal improvement in the revenue too right?
Option D states that the relationship established is false and and if its just a small increase or a negligible increase (increase nonetheless) a "significant" increase is undermined seriously too?
Kindly help me out here.


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I did have a similar line of thought and I did choose A as well all along before I thought D was better. But now that I again think of it A is as I realise an "assumption" right like you perfectly stated, it could be that the actual evaluation was higher yield-->high revenue, but the fact that it was "significantly" high revenue could have been the actual flaw and I felt the specific wording made the difference. I do understand the point of view of how A is right but I still feel D is right in this sense. Kindly help me out.
Yes I agree D is vague, but A is vague in the sense that we "assume" that higher yield COULD NOT have always led to a higher revenue and thus it would be a "flaw" but if it were otherwise(considering two diff standpoints using negation technique), its an assumption more than a a statement vulenerable to criticism IMO. Looking forward to your reply and get more clarity on this question myself!
egmat
You're right that there's a gap between yield and revenue. But let's look at what each option actually says:

Option D says: "Fails to draw the correct relationship..."
→ This is vague. WHAT's incorrect about the relationship? D doesn't specify.

Option A says: "Takes it for granted that removal of a cause behind low yields will DEFINITELY lead to higher revenues."
→ This is precise. It identifies the assumption: that fixing yield problems automatically guarantees revenue increases.

The Core Issue:
The argument's flaw isn't about "how much" the revenue increases (significant vs. small). It's about assuming ANY yield improvement leads to revenue improvement at all.

Think about it:
• Even if yields DOUBLE, revenue could DECREASE if coffee prices crash
• Even if yields improve, revenue could FALL if farming costs skyrocket

The argument treats "better yield" as automatically meaning "better revenue" - that's the flaw A identifies.

Why D Doesn't Work:
D says the relationship isn't "correctly drawn" - but that's too vague. It doesn't tell us WHAT the argument wrongly assumes. A does: it assumes removing the obstacle to yields will DEFINITELY increase revenue.

Answer: A


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Happy to clarify further!

Look at D again: "Fails to draw the correct relationship between the expected increase in coffee yields and subsequent revenues."

The argument did draw a relationship - it said fixing yields will increase revenues. So what does "correct" even mean here? Should revenue go down when yields go up? Should it stay flat? Should it go up but only by a small amount? D has no answer because it's pointing at a problem that doesn't exist - the argument didn't "fail to draw" anything.

Now look at A: "Takes it for granted that the removal of a cause behind low yields will definitely lead to higher revenues."

A sees exactly what the argument did - it connected yield recovery to revenue growth - and calls out exactly what went wrong: that connection was assumed, not proven. Revenue = price × quantity. Yields only cover quantity. The argument never accounted for the price side.

Simple example:

"Traffic jams cause employees to arrive late. If we remove traffic jams, a significant increase in productivity is ensured."

→ A says: You took for granted that removing the cause of lateness will definitely boost productivity. But productivity depends on motivation, management, tools - not just showing up on time. Precise.

→ D says: You failed to draw the "correct" relationship between arrival time and productivity. Okay - so what is the correct one? Should productivity go down when people arrive on time? D can't say, because the argument did connect them - it just never proved the connection.


Adit_
I did have a similar line of thought and I did choose A as well all along before I thought D was better. But now that I again think of it A is as I realise an "assumption" right like you perfectly stated, it could be that the actual evaluation was higher yield-->high revenue, but the fact that it was "significantly" high revenue could have been the actual flaw and I felt the specific wording made the difference. I do understand the point of view of how A is right but I still feel D is right in this sense. Kindly help me out.
Yes I agree D is vague, but A is vague in the sense that we "assume" that higher yield COULD NOT have always led to a higher revenue and thus it would be a "flaw" but if it were otherwise(considering two diff standpoints using negation technique), its an assumption more than a a statement vulenerable to criticism IMO. Looking forward to your reply and get more clarity on this question myself!

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