Jaslyn

Social Studies

8 November, 06:57

While studying the impact of ginkgo biloba on memory, a researcher has one group of rats on a normal diet while the other rat group is given measured doses of ginkgo biloba with their meals. While observing the rats run a complicated maze, the researcher notes that the ginkgo biloba-enhanced rats' maze is more brightly lit than the normal diet rats' maze. The difference in lighting in this study is a (n)

A. confound.

B. dependent variable.

C. hypothesis.

D. independent variable.