A dictionary is most helpful for students who need to check the meaning of a word.
are looking for synonyms of a word.
are looking for antonyms of a word.
want to keep their writing interesting.

the first choice: need to check the meaning of a word

Explanation:

because I say

A.) Need to check the meaning of a word

Explanation:

A

if this isnt a true or false than they have equal amount of importants