Ignorance is not equal to stupidity, since you can often

78) Ignorance is not equal to stupidity, since you can often correct ignorance but the same is not true of stupidity

(A) since you can often correct ignorance but the same is not true of stupidity.
"you", shouldn't be there because the sentence didnot indicate that this is a connversation or something, and even so, its not clear whom it refering to.
(B) because it can be corrected and the other cannot
"it" is not obvious whether it is refering to ignorance or stupidity, and in turn, "ther other" is not clear who it refering to.
(C) for ignorance can often be corrected but stupidity cannot.
this is the best answer as it is clear and concise and gramatically corret
(D) because of the correctable nature of ignorance.
this ignores stupidity and awkward rephrase and wordy enough to make you think it is correct
(E) because the two differ regarding ability for correction
this doesn't show the difference between ignorance and stupidity. and it is not clear what does it mean

so the correct answer is C
hope that helps

C indeed looks good here. But in general, none of the choices sound right.

C.

78) Ignorance is not equal to stupidity, since you can often correct ignorance but the same is not true of stupidity
(A) since you can often correct ignorance but the same is not true of stupidity
Not parallel. You is not parallel to stupidity.
(B) because it can be corrected and the other cannot
Unclear.
(C) for ignorance can often be corrected but stupidity cannot
Clear and correct.
(D) because of the correctable nature of ignorance
Says nothing about stupidity.
(E) because the two differ regarding ability for correction
Wordy and unclear which is correctable.

I simply choose C after 10 second because of the existence of comma. When subordinate clause go after the independent clause, SC will not need the comma before it.

Recommend: you should read more about coordinator FANBOYS (for, and, nor, but, or, yet, so) and subordinate clause.

Hope that help
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"for ignorance" makes the sentence weird.

+1 for C.

"for" here is acting as "because".

Crick

Ignorance is not equal to stupidity - independent clause
ignorance can often be corrected but stupidity cannot - independent clause

Both the independent clause must be added with FANBOYS word. hence C is correct.
Cheers!

+1 C

(A) "since" doesn't mean "because" in SC. Only in SC!
(B) "and" is wrong. we need "but".
(C) "for" means "because". Right.
(D) The meaning is not complete.
(E) It is not clear.

Nope it doesn't. the word "For" is used in the form of because. Just as the word "As" can have multiple meanings, the same goes with the word "for".

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