Error in Sentence Consistency and Parallelism. the answer is d.

A.First prepare a résumé; then write your cover letter.
B.An autocratic leader makes all decisions and then tells subordinates what to do and how to do it.
C.If you have an eye for detail and an ear for language, this position may be right for you.
D. A director may use a reaction shot to show the severity of an accident, or they may shoot the accident scene itself.