If there is a disparity between Mia's grades this year and her grades last year, which of the following must be true? A. Mia's grades this year are the same as they were last year.
В.
Mia's grades this year are worse than they were last year.
C. Mia's grades this year are better than they were last year.
D
Mia's grades this year are different than they were last year.

Mia's grades are different this year than they were last year

Explanation:

Disparity means a great difference

they insisted that there was not enough time to learn everything.  

explanation:

if they were going to steal the answers that is simply because they insisted that there was not enough time to learn everything.  

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