Two Centuries Ago, Tufe Peninsula became Separated form the Mainland GMAT Critical Reasoning

Question: Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

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

(A) There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
(B) There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
(C) The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
(D) The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
(E) The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.

Correct Answer: C
Explanation:

In the GMAT section on critical thinking, you will be evaluated on your ability to analyze and think critically. To provide a coherent response, a person must possess a great deal of mental capacity.

To make a decision, each possibility must be thoroughly considered. Only one of the five options presented will be correct. To make the optimal decision, the candidate needs to consider numerous factors.

Some points :
The Tufe Peninsula was cut off from the mainland two centuries ago, isolating Turfil sunflowers on the newly formed Tufe Island. The progeny of this group develops to be 40 cm shorter on average than the Turfil sunflowers found on the continent. Much drier than Tufe Peninsula was, Tufe Island
Conclusion:
- Hence, changes in Tufe's environmental conditions are definitely responsible for at least some of the current average height of Tufe's Turfil sunflower.

Let's now examine the possibilities.
A - Remove the outside of the scope.
B: Remove; not relevant.
Eliminate the fact rather than the supposition.
E More of a reality than a supposition."

The premise is that since the environment on the mainland hasn't changed, there hasn't been a change in the height of Turfil sunflowers on the mainland. As a result, the only reason the heights alter is that the island's ecology has changed.

This is related to the ending.
Let’s check the given choices -

A: Incorrect

It is an incorrect choice. It's common knowledge that certain kinds of plants thrive in arid environments, and there are many of them. It is out of the question; we are not concerned with the growth of other kinds of plants.

B: Incorrect

It is the wrong choice. Because this is outside the scope of the discussion, it does not address the weather or any circumstances that would make it true.

C: Correct

It is the correct choice. The ecology on the mainland has changed in ways that have caused T sunflowers to grow 40 cm higher today than they did two centuries ago. Okay, so you're telling me that both sunflowers were "X" height before the T Peninsula separated, but that when the island's separation was finalized, the environment changed, allowing the sunflowers to grow? This would imply that on the mainland, the sunflowers are "X + 40 cm" tall!

D: Incorrect

It is an incorrect answer. In terms of soil, this illustrates a similarity between the island and the mainland. We are interested in seeing how the environment has evolved and how the two geographies differ.

E: Incorrect

It is an incorrect answer. "T sunflowers on the island and those on the mainland DO NOT vary JUST in height by 40 cm." out of bounds. Who cares if it is? Environmental factors that result in an increase in height are the only difference we are interested in.

“Two centuries ago, Tufe Peninsula became separated form the mainland,” – is a GMAT Critical question. To answer the question, a candidate can either find a piece of evidence that would weaken the argument or have logical flaws in the argument. GMAT critical reasoning tests the logical and analytical skills of the candidates. This topic requires candidates to find the argument's strengths and weaknesses or the logical flaw in the argument. The GMAT CR section contains 10 -13 GMAT critical reasoning questions out of 36 GMAT verbal questions.

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