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Meaning :-
Sentence intends to convey the activity of a margine organism during warmer months.
Zooplankaton do 1 sink to escape predators when sun rises and 2 ascend to feed at night.

The meaning can be best conveyed by showing the both actions using AND.

Error Analysis:-
During warmer months, zooplankton,
microscopic marine animals that drift in oceans and bodies of fresh water,
sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

1. The sentence is structured as the sun rises to escape by ascending again night
2. to escape predators should modify the verb sink.
3. and is missing before ascend.


A) sink from the water's surface when the sun rises to escape predators, ascending
As mentioned above
B) sink from the water's surface at the sun's rise to escape predators, to ascend
to ascend - phrase modifying sink - illogical,

C) and sink from the water's surface when the sun rises, escaping predators and ascending
and - wrong , No verb for Zooplan, escaping modifiies sun rises
D) sink from the water's surface in order to escape predators when the sun rises and ascend
Conveys the meaning.

E) sink from the water's surface to escape predators at the sun's rising, and ascend
at the sun's rising is awkward.


So i believe D is the right option.
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generis

Project SC Butler: Day 147 Sentence Correction (SC1)


For SC butler Questions Click Here
During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.
Sentence Structure
Subject - Verb
      During warmer months,
    ZOOPLANKTON
        , microscopic marine animals that drift in oceans and bodies of fresh water,
      SINK from the water's surface in order to escape predators
        when the sun rises
      and ASCEND again to feed at night.

Issues:
    Initially, I assume zooplankton singular, considering zooplankton as a species( Singular-entity).
    However, zooplankton ----maps to---> microscopic marine animals( Plural Subject) that drift( Plural Verb)
    Thus, we need to consider zooplankton plural.

    Moving on to the next split, we get sun's rising vs the sun rises.
    B and E The possessiveness of inanimate things is wrong.

Answer choice analysis:
    A) sink from the water's surface when the sun rises to escape predators, ascending
      Meaning issue: the sun rises to escape predators. Really, who can even dare to threaten the sun!? :cool:
      The verb-ing form CAN easily map to either zooplankton or the sun, creating ambiguity about the doer of the action/previous clause.

    B) sink from the water's surface at the sun's rise to escape predators, to ascend
      The possessiveness of inanimate things is wrong.

    C) and sink from the water's surface when the sun rises, escaping predators and ascending
      The verb mapped to the subject zooplankton is missing because sink is parallel to drift

    D) sink from the water's surface in order to escape predators when the sun rises and ascend
      Great question. Loved every bit of it. D is the champ!

    E) sink from the water's surface to escape predators at the sun's rising, and ascend
      The possessiveness of inanimate things is wrong.
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A) sink from the water's surface when the sun rises to escape predators, ascending
The use of "ascending" is making illogical relationship between the two action.

B) sink from the water's surface at the sun's rise to escape predators, to ascend
Same as above, the "sink" doesn't lead to the "ascend."

C) and sink from the water's surface when the sun rises, escaping predators and ascending
There is no parallel action in the preceding sentence before "and."

D) sink from the water's surface in order to escape predators when the sun rises and ascend
CORRECT

E) sink from the water's surface to escape predators at the sun's rising, and ascend
"at the sun's rising" has different meaning from the original sentence.
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During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

A) sink from the water's surface when the sun rises to escape predators, ascending - we use ing modification when we speak about course and effect situations

B) sink from the water's surface at the sun's rise to escape predators, to ascend - wrong parallel structure

C) and sink from the water's surface when the sun rises, escaping predators and ascending - SVA no need for and

D) sink from the water's surface in order to escape predators when the sun rises and ascend - correct answer

E) sink from the water's surface to escape predators at the sun's rising, and ascend - wrong ing form for imanimate things
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Quote:
During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

A) sink from the water's surface when the sun rises to escape predators, ascending : Incorrect,

B) sink from the water's surface at the sun's rise to escape predators, to ascend : Incorrect, awkward construction. Now, the sentence means that zooplankton sink ...to escape, to ascend.

C) and sink from the water's surface when the sun rises, escaping predators and ascending : incorrect, Sink is one of the two verbs and an 'and' should not be used before it.

D) sink from the water's surface in order to escape predators when the sun rises and ascend : Sink is made parallel to ascend, Correct.

E) sink from the water's surface to escape predators at the sun's rising, and ascend : awkward construction. at sun rise should have been correct usage.
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IMO: D is correct

During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

A) sink from the water's surface when the sun rises to escape predators, ascending - ascending incorrectly modify the previous clause

B) sink from the water's surface at the sun's rise to escape predators, to ascend - the zooplankton sink ...to escape predators to ascend - Wrong

C) and sink from the water's surface when the sun rises, escaping predators and ascending - and is incorrect

D) sink from the water's surface in order to escape predators when the sun rises and ascend - correct

E) sink from the water's surface to escape predators at the sun's rising, and ascend - sun's rising is incorrect. Moreover, we use "commas before and" when we have 3 things. For example, X,Y, and Z. When we have 2 things X and Y is enough.
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IMO correct answer is D

Xylan, thanks for the information regarding possessiveness of inanimate things. This is wrong. I get to know the new information. I was discarding this split on account of awkwardness in sentence structure. :)

During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

A) sink from the water's surface when the sun rises to escape predators, ascending - Issue with parallelism, "Drift" plural verb, goes well with sink, but "ascending" is not a proper usage - Incorrect

B) sink from the water's surface at the sun's rise to escape predators, to ascend - "to ascend" is incorrect again for the reason mentioned above.

C) and sink from the water's surface when the sun rises, escaping predators and ascending - "escaping predators and ascending" tried to make this parallel, but these activities are not taking place simultaneously & hence verb+ing modifier cannot properly modify the clause preceding it.

D) sink from the water's surface in order to escape predators when the sun rises and ascend - Correct

E) sink from the water's surface to escape predators at the sun's rising, and ascend - possessiveness about the inanimate object as i mentioned above, also "," before and is making it incorrect.
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generis

Project SC Butler: Day 147 Sentence Correction (SC1)


For SC butler Questions Click Here

During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

A) sink from the water's surface when the sun rises to escape predators, ascending

B) sink from the water's surface at the sun's rise to escape predators, to ascend

C) and sink from the water's surface when the sun rises, escaping predators and ascending

D) sink from the water's surface in order to escape predators when the sun rises and ascend

E) sink from the water's surface to escape predators at the sun's rising, and ascend

A) sink from the water's surface when the sun rises to escape predators, ascending - "the sun rises to escape predators" gives a different meaning

B) sink from the water's surface at the sun's rise to escape predators, to ascend - Creates an wrong list with no connector. Completely different meaning

C) and sink from the water's surface when the sun rises, escaping predators and ascending - zooplankton and Sink - No Verb for the subject

D) sink from the water's surface in order to escape predators when the sun rises and ascend - Correct. <But is "In order" required? Seems redundant with "to" giving purpose>

E) sink from the water's surface to escape predators at the sun's rising, and ascendat the sun's rising - Looks awkward?
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J2S2019
IMO correct answer is D

Xylan, thanks for the information regarding possessiveness of inanimate things. This is wrong. I get to know the new information. I was discarding this split on account of awkwardness in sentence structure. :)
Glad you found the notion useful!

Just to give a heads-up to the people on the GMAT-forum (Notice, how it's people on the GMAT-forum NOT the GMAT-forum's people ) -
    The engine of the car is preferred to the car's engine. - It's a preference, NOT a rule.

However, the F1 car of Michael Schumacher is almost similar to Michael Schumacher's F1 car.
Thus, the rule - The possessiveness of inanimate things is wrong.
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During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

Structure: Modifier, Subject, Modifier, Verb+Object, and verb+object. --> This should be the correct construction here.

Now, let's understand the meaning perspective: Zooplankton sinks during the day to escape predators and ascend during the night to feed.

Using verb-ing (ascending) in place of a verb is wrong. The subject zooplankton has two verbs here sinks and ascend.

Option D corrects this error.
IMHO D
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I have posted the official explanation HERE
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generis
• Possessive nouns: the sun's rise and the sun's rising
-- Xylan , I would have to mine data before I signed onto what you say is a guideline. What is the source of this guideline?
You seem to be a very thorough student of language. You certainly are conscientious. :)

I am not saying that the guideline is incorrect. I haven't read official questions with that issue in mind.
I would love to know the source. (I have heard this rule mentioned once before.)
Quote:
How possessive noun's behave is complicated and not something that is easily articulated in part because some inanimate nouns take possessives and others do not, but the difference can turn on many bases. One base is idiom. Another is words used. (Water's surface = concrete noun, concrete noun whereas the sun's rise = concrete noun, action noun.)
Why is the water's surface okay?
    Even I was dicey on the implications of the water's surface as compared to the surface of the water in the EXACT same sentence that uses sun's rising.
    However, all the option choices have water's surface in common. Thus, the thought - It's a stylistic preference/rhetorical construct.

generis
We have to be a little careful with these guidelines. I pulled three official questions quickly. All use possessive inanimate objects.
• the company's - the question is HERE
• the nation's - the question is HERE
• the planet's - the question is HERE
    generis, I did review a couple of OG questions apart from the above listed.
    What you have is quoted is absolutely true - 'All use possessive inanimate objects'.
    However, ALL the above answer choices play around with the idea in the non-underlined portion.
    There is NO decision point amongst the answer choices regarding this issue.

To quote Ron, "GMAT-SC is a beauty-contest".
One needs to find the least BAD of all efficiently. :)

My personal opinion amidst all this -
    I am not utterly comfortable in discarding answer choices on a mere thought of awkwardness and sound as GMAT lays incessant TRAPS on these vulnerabilities, unless it's an idiomatic usage such as Both X and Y, NOT Both X as well as Y, etc.
    Something which seems awkward to me would not necessarily seem awkward to others and vice-versa.
    Thus, the label with the disclaimer -
      The engine of the car is preferred to the car's engine. - It's a preference, NOT a rule.

Would love to hear your thoughts!

PS: Google asked me to verify whether I'm a bot because of the unusual surge in traffic. :grin:
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generis

I must consider myself lucky to get to OA in spite of incorrect approach.
I thought coma_verb-ing (ascending) did not make sense with preceding clause
(the sun rises to escape predators). Could you clarify how it jumped over this phrase
to modify subject of earlier clause: Zooplankton sink from the water's surface.
Is this observed a lot in official questions too?

Quote:
We know that ascending refers to zooplankton. The sun does not eat.
True, is this similar to searching for an antecedent for a pronoun when we have more than two antecedents?
Can I formulate this rule to search for an unique subject that coma+verb-ing modifies?

I got to OA purely based on ||ism since I thought Zooplankton need two parallel verbs:
sink and ascend (also coma+ and correctly separated two verbs)

Missed out on placement of infinitive - to escape predators - because of my hurried reading ;)
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generis

Project SC Butler: Day 147 Sentence Correction (SC1)


For SC butler Questions Click Here

During warmer months, zooplankton, microscopic marine animals that drift in oceans and bodies of fresh water, sink from the water's surface when the sun rises to escape predators, ascending again to feed at night.

A) sink from the water's surface when the sun rises to escape predators, ascending

B) sink from the water's surface at the sun's rise to escape predators, to ascend

C) and sink from the water's surface when the sun rises, escaping predators and ascending

D) sink from the water's surface in order to escape predators when the sun rises and ascend

E) sink from the water's surface to escape predators at the sun's rising, and ascend

C - is eliminated. doesn't complete the sentence and makes no sense.
A - does Sun rise to escape predators...which doesn't make sense or zooplankton sink to escape predators is not clear. ascending incorrectly modifies predators.
B - Zooplankton sink to escape predators and to ascend again....changes the meaning and incorrect
D - seems correct. sink and ascend are parallel.
E - at the sun's rising is awkward. It could be at the rising of Sun. , before and is unnecessary.
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