When revising and editing the chronological essay?

a. check the the word choice denotes chronological sequence.
b. review the plot summary.
c. check that quotes have been inserted to support the thesis.
d. note the genre of the work.

a..check that the word choice denotes chronological sequence

Explanation:

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

i would pick a. i think this is more of a personal question though.