Read the sentence below and answer the question. During the school year, Cassie struggled with several subjects, including performing on math tests, to develop good work habits and studying every night.
Which substitute for the underlined part of the sentence is most effective in correcting its structure?

to perform on math tests, to develop good work habits, and studying every night.
to perform on math tests, to develop good work habits, and study every night.
performing on math tests, developing good work habits, and studying every night.
Leave as is.

performing on math tests, developing good work habits, and studying every night.

Explanation:

The event in the sentence is set in the present but will continue into the future. It would therefore be best to use a Present Continuous Tense for the underlined part to properly describe Cassie's actions as well as to introduce uniformity in the tenses used.

Present continuous tense would require the use of verbs with -ing which is why the best verbs to use are "performing", "developing", and "studying".

its repetition emphasizing that the chain is his own. sorry if i am wrong.