Which of the Following Is a Major Problem in Causal

Multiple Choice

Which of the following is a major problem in causal research?

A) It is by far the most expensive type of research marketers use.
B) It can be difficult to identify and test all the reasons customers use to make decisions and act.
C) Its nature makes it difficult to obtain accurate and reliable information.
D) It is more appropriate for scientific or academic purposes that for practical marketing matters.