Answer:
d. Because he will likely need to be a producer of researcher as well
Explanation:
According to the Producer-Consumer Model of research, for any element of research, there are consumers and producers (authors). Being a good consumer of any psychological research requires a scientific perspective, claims require confirmation, and not just opinions. Sound research methods have more valid conclusions.
A responsible consumer of any research gives a serious thought and understanding of, what you don't know, what you do know, what you can't know, and what you can know.