Answer:
D. All of these choices are correct.
Explanation:
William James was considered as the first psychologist to teach psychology in the U.S. however, he was considered as the father of American psychology. He was famous for his work in psychology on Functionalism as he has the theory on the same.
According to William James, Functionalism is defined as the process that involves behavior and thoughts and ultimately helps an individual to adapt to his or her environment.
According to him, consciousness is considered as a metaphor that describes the process through which thoughts of an individual tends to flow through the conscious mind.