In the following questions, a sentence / part of the sentence is printed in bold . Below are given alternatives to the bold sentence / part of the sentence at (a), (b) and (c) which may improve the sentence.

A high school student is not even understanding the basics of Chemistry and Physics.

A. does not understand even

B. was not even understanding

C. has even not understood

D. No improvement

Please do not use chat terms. Example: avoid using "grt" instead of "great".