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The critical reasoning question is based on a short argument, a set of statements, or a plan of action. For each question, select the best answer of the choices given and explain why the chosen answer is the right fit.

Passage: According to a study salamanders prey consists of leaf-eating insects that feed on fallen leaves and convert the carbon present in the leaves into methane which is released in the atmosphere. And if there are not enough insects left to eat the fallen leaves, the leaves remain intact and are transformed into humus.

Statements:

(A)Larger presence of salamander will lead to the production of a larger amount of humus.

(B)All insects only eat leaves and nothing else.

(C)Soil rich in humus is good.

Question: Which of the above three statements could be inferred from the passage?


1. Only (A)
2. Both(A) and (B)
3. Only (B)
4. Both (A) and (C)
5. Both (B) and (C)

1 Answer

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Best answer
Correct Answer - Option 1 : Only (A)

Option 1, Only A. 

The passage mentions that salamander feed on leaf-eating insects which in their turn convert carbon present in the leaves into methane  and if there are not many insects left then the leaves are converted into humus instead.

From what has been supplied it can be deduced that if the number of salamanders increase then they will feed on more and more insects and the fallen leaves will be left to decay and transform into humus. Therefore, statement A can be inferred.

But from what has been supplied we cannot infer that all the insects only eat leaves and nothing else. Therefore, statement B cannot be inferred.

Also from what is given, it cannot be deduced that soil rich in humus is good or bad. Therefore statement C cannot be inferred.

Hence,option 1 is correct. 

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