You want to understand if many amphibians respond to chemical stimuli from predators in the same way.What is one approach you could take to test this without actually having to conduct experiments on hundreds of aquatic prey?

A) Do experiments with a few individuals and then extrapolate from there.
B) Conduct an experiment with aquatic prey from every genera of aquatic prey and compare responses.
C) Apply for a grant and hope you get enough money to test every species.
D) Peruse the primary literature and perform a meta-analysis.