Select the letter of a category on which you should focus when proofreading.
a.
strength of your lead sentence
b.
who, what, where, when, why and how
c.
conventions
d.
elaboration

c. conventions.

Writing conventions include spelling, punctuation, capitalization and grammar. It is necessary to pay attention to these rules in order to make sure that an essay flows well, is understandable, and can be read by a wide audience. These conventions are the most important thing to pay attention to during the process of proofreading.

for example: in, he, a,from

c? not a 100% sure

explanation: