Which of the Following Is a Reason Why the Idea

Multiple Choice

Which of the following is a reason why the idea that instincts can explain an individual's motivation is not considered valid?

A) Most of the early work on instincts has been lost or destroyed
B) The existence of an instinct is difficult to prove or disprove
C) Consumer needs are reflective of instincts, but wants are not
D) Researchers have only been able to test instincts using animals other than humans
E) Scientists have not made an effort to study the presence of instincts