Answer:
Heisenberg's Uncertainty Principle applies to market research because you are able to measure what the consumers actually do rather than what they say they do. ... The scientific method applies to marketing because you are able to invest in a brand, but a contrary evidence may destroy a consumer's beliefs.
Explanation:
I reckon everything but E is a correct answer.
Writers should include references to their research in an argument because it adds credibility to the argument to the argument they wish to prove.