Joseph: My encyclopedia says that the mathematician Pierre de Fermat died in 1665 without leaving behind any writt...

on August 26 at 05:33PM

B VS. C

Can someone please explain these two answer choices?

1 Reply

Ravi on September 10 at 04:09AM

Let's look at (B) and (C).

(B) says, "It mistakenly assumes that the quality of a person's
character can legitimately be taken to guarantee the accuracy of the
claims that person has made."

The problem with (B) is that she says that Joseph is wrong about a
particular claim, but this doesn't mean that she's basing her
conclusion on undermining one of his claims. She's not relying on the
quality of Fermat or Joseph's character to arrive at her conclusion,
so this is out.

(C) says, "It mistakes something that is necessary for its conclusion
to follow for something that ensures that the conclusion follows."

(C) is great because it's necessary for her conclusion (which is that
Fermat is right) that the theorem is provable. But it's not sufficient
to ensure that conclusion, so this is why (C) is correct.

Let us know if you have any other questions!