Ahh. Great question testing Sufficient and Necessary Assumptions. LSAT favorite.
Let's understand the difference.
What is a Sufficient Assumption? Literally, an assumption that would guarantee that a conclusion follows logically.
What is a Necessary Assumption? Literally, an assumption that is required for the conclusion to follow logically.
e.g.
Club Bouncer: Only people above the age of 21 are allowed to enter.
BB's age is 25. BB can enter the club. Sounds right? Yes... No...?
The argument
doesn't follow logically from the support because
"BB's being above 21" is
NECESSARY for the argument but is it SUFFICIENT? What if the club doesn't allow Stags, What is BB's dress code is not proper, etc.
Similarly, in the main argument
To classify as truly great art, NECESSARY- Originality, and Influence. (Not Sufficient)
B and C are the only options relevant to the question.
in C,
Quote:
This tremendous originality, profound impact , is enough to consider these works to be truly great[/i] .
Originality + Impact(influence)
is NECESSARY but
not SUFFICIENT.
What if the Drumming practice is original and has an impact but in a controversial way. Would it be TRULY GREAT? No, right!
So, C is wrong.Now in B,
Quote:
[i]most original art , only minor influence , and hence cannot be considered truly great .
Here, one of the NECESSITIES is absent and hence the art CANNOT be considered truly great.
Absolutely CORRECT.Thanks and regards,
Sri!