Arctic Ocean

[crackgmat007]

The hypothesis has been advanced that the ancestors of such plants and animals as the giant sequoia, the alligator, and the horse appeared on the fringes of the Arctic Ocean millions of years before lower latitudes.

(A) before lower latitudes
(B) before at lower latitudes
(C) before they did it at lower latitudes
(D) before they appeared at lower latitudes
(E) preceding their appearance at lower latitudes


OA to follow. Pls explian your answers.

[riteshbindal]

IMO, the answer is D.
For few moments, if you forget about the examples given in the sentence, then it become like this:
The hypothesis has been advanced that the ancestors of such plants and animals appeared on the fringes of the Arctic Ocean millions of years before lower latitudes.

Definitely it is a parallelism. So the plants and animals appeared before lower attitude is not correct because the comparison is done for "appeared". So A is incorrect. B is a bit ambiguous "before at lower latitudes". Something is missing between before and at. So this is incorrect too. C sounds to be correct "before they did it at lower altitudes" but still it doesnt specify what they did, so lets hold on it. D sounds to be absolutely right as t specifies that "before they appeared at lower latitudes" which removes al ambiguities and is grammatically correct too. E is passive so it is incorrect.

[perfectstranger]

The hypothesis has been advanced that the ancestors of such plants and animals as the giant sequoia, the alligator, and the horse appeared on the fringes of the Arctic Ocean millions of years before lower latitudes.

(A) before lower latitudes
(B) before at lower latitudes
(C) before they did it at lower latitudes
(D) before they appeared at lower latitudes
(E) preceding their appearance at lower latitudes


OA to follow. Pls explian your answers.

X appeared on the fringes of the Arctic Ocean millions of years before Y appeared paralelism IMO D

[madhur_ahuja]

Yes, D due to parallelism

[cata1yst]

IMO, the answer is D.
For few moments, if you forget about the examples given in the sentence, then it become like this:
The hypothesis has been advanced that the ancestors of such plants and animals appeared on the fringes of the Arctic Ocean millions of years before lower latitudes.

This is a great point. I did the same thing to arrive at D.

[crackgmat007]

OA - D

[goelmohit2002]

C sounds to be correct "before they did it at lower altitudes" but still it doesnt specify what they did, so lets hold on it.

Here IMO C is wrong because of did it....

there is no referent for it....

it should have been did so....

As per my understanding it = replaces noun
so = replaces verb/action.

Please correct me if I am wrong here.

[riteshbindal]

C sounds to be correct "before they did it at lower altitudes" but still it doesnt specify what they did, so lets hold on it.

Here IMO C is wrong because of did it....

there is no referent for it....

it should have been did so....

As per my understanding it = replaces noun
so = replaces verb/action.

Please correct me if I am wrong here.

That is exactly what i have written that "still it doesnt specify what they did" I should have quoted it part.