Rather, our intelligence is a result of the dense and complex neural network of the human brain.

madbrainedmudlickAI and Robotics

Oct 20, 2013 (3 years and 5 months ago)


Reading passage 2 answer

Intelligent people are often said to have big brains. This should not be taken literally. If
brain size were the cause of intelligence, we should expect elephants to be the planet’s
smartest creatures.
Rather, our intelligence is
a result of the dense and complex
neural network of the human brain.

The disproportionately large human brain is no
accident, however: the constancy of cell size means that a certain cranial capacity is
Indeed, a large cranial volume is paramoun
t to allow for an advanced
neural network to develop.

Brain size should thus be considered a prerequisite for
intelligence rather than its cause.

In the argument given, the two sentences in bold play which of the following roles?


The first cites a general
rule; the second points out an exception to that rule.


The first makes a hypothesis; the second provides evidence confirming this


The first makes an observation; the second proposes an explanation for this


The first makes a crucial

claim; the second links this claim to the main idea
of the passage.


The first identifies a common argument; the second contradicts this argument.

(D) is the credited response.

The first few sentences draw a clear distinction

between brain size and intelli
gence. The
first bolded sentence follows the elephant comparison, which underscores this “crucial
claim” made by this sentence. Only (D) fits the sequence.

(A) is incorrect. The main topic of this passage is brain size and its relation to
intelligence. In
the first bolded sentence, the author makes a claim that is central to his
argument: “our intelligence is the result of . . .” This is certainly not a general rule, so
eliminate (A).

In the second bolded sentence, he explains what this claim has to do with

brain size.

(B) is incorrect. There is no evidence provided by the passage, so (B) is incorrect.

(C) is incorrect. Although the first bolded sentence may be seen as an observation, the
second bolded sentence doesn’t explain the first. (The second bolded s
entence offers an
explanation for the unbolded sentence that immediately precedes it.)

(E) is incorrect. Despite the presence of the word however, in another sentence there is no
contradiction between the two bolded sentences, so choice(E) is incorrect.