A Simile is a sentence used with like or as so your answer would be B.
Answer:
I believe both A and B are correct
A. Spelling
b. Punctuation
c. Grammar
d. Noun
e. Verb
f. Fluency
g. Vocabulary
Since astute means someone is very sharp and perceptive, I would say astute has a positive connotation.
Hope this helps! :)
This is a sentence fragment, because it is incomplete, it needs to be completed in order to be a sentence.