Question

which website author is most likely to offer advice based on scientific research?
a. a chemist who develops supplements
b. a person with \dr.\ in front of his or her name
c. an activist at a radical nonprofit organization
d. a professor at a well - respected university

Explanation:

A professor at a well - respected university is likely to be involved in academic research, which is based on scientific methods. A chemist developing supplements may have a conflict of interest (profit - driven). Just having "Dr." doesn't guarantee scientific research - based advice (could be an honorary degree etc.). An activist at a radical nonprofit may have biases not based on scientific research.

Answer:

D. A professor at a well - respected university