Answer:
B. A professor at a well-respected university
Step-by-step explanation:
According to a different source, these are the options that come with this question:
A. A person with "Dr." in front of his or her name.
B. A professor at a well-respected university.
C. An activist at a radical nonprofit organization.
D. A chemist who develops supplements.
The professor at a well-respected university is the person who is most likely to offer advice based on scientific research. This is because universities generally have high standards when it comes to their staff. A professor is likely to be an expert on his subject. He is also likely to conduct a lot of research and to have a deep respect for the rules of scientific research.