Answer:
Step-by-step explanation:
Discussion
D: Though I don't like choosing this as an answer, there does not seem to be any other choice. I would pick D. because AAA is an organization that is dedicated to studies that show what driver trends are and how they are noticeably evolving. The problem is, we really don't know who wrote it and the facts and figures are not footnoted in any way. Still D is the best answer.
B: though I agree that having an anonymous author is a problem, it is not a huge one. Still it would help to know who the author is, and how well known is he/she to others in the field.
C: Of course the author is biased. He/She has been commissioned by AAA to write this summary. But it is not the best statement that can be made. D is.
A: this is not a primary source. It is a summary of studies that have been done. The answer is not A.