Which sentence contains a subject-verb agreement error?

Which sentence uses the verbs correctly?

In the first six lines of "a valediction: forbidding mourning," the speaker compares parting to a. dying. c. sorrowing. b. breathing. d. dissolving.

Ijust done my mock exams recently and i am in year 11, i did not do very well and i am stressed out about it, i spent time revising but it didn't work out for me, can someone tell me any good tips on how to revise effectively so for my next mocks i am well prepared.