Answer:
D
Step-by-step explanation:
Effective responses are
a. NOT dishonest, as that would might make it incorrect.
b. COULD BE long, but don't necessarily have to be.
c. NOT brief, as an effective answer should be detailed enough to thoroughly answer the question.
d. COMPLEX because it provides a deeper understanding and more thorough answer to said question.
Out of all 4 options, complex would be the best; although keep in mind that answers can be effective without being complex.