Question

In which sentence is the correct form of the pronoun who(ever) / whom(ever) used ?

A. Whose did you consult about your career decision? incorrect
B. Who did you consult about your career decision? incorrect
C. Whoever did you consult about your career decision? incorrect
D. Whom did you consult about your career decision? Correct answer

Answer 1

The correct answer is D. Whom did you consult about your career decision? 
The pronoun whom/whomever is used as an object pronoun - so only when this pronoun is the object of a sentence can it be used. The only sentence that correctly uses the pronoun whom is D; in A, it should be whom; in B, it should be whom; in C it should be whomever. 

Answer 2

The answer is: D. Whom did you consult about your career decision? Correct answer