IMO C

parallelism and meaning issues

A. reading assignments, and to write---incorrect, parallelism with last underline part

B. reading assignments, and writing---incorrect, parallelism with last underline part

C. to read assignments, and write---correct,

D. to read assignments, and to write--incorrect parallelism

E. to read assignments, writing----incorrect, parallelism

Many freshmen find the first year of college quite challenging and are unable to balance responsibilities such as attending class, reading assignments, and to write papers with the wide and sometimes bewildering array of new social opportunities.


A. reading assignments, and to write( parallelism is not maintained)

B. reading assignments, and writing( correct choice)

C. to read assignments, and write( parallelism is distorted)

D. to read assignments, and to write( not parallel with attending)

E. to read assignments, writing( parallelism is not maintained)

Will go with choice B

Thanks
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The original sentence has parallelism error.

List of parallel entities:
1) attending class,
2) reading assignments, and
3) writing papers

The original sentence uses to + verb form for "write". Instead verb+ing form should be used to make "write" parallel with "attending" and "reading".

Answer: B