Question

lisa warnecke and researchers at the university of winnipeg inoculated a group of bats with a solution containing pd and then recorded how long the bats slept during hibernation. they compared the length of sleep periods to a group of bats who did not get pd. what is the dependent variable in this experiment? the weight of each bat the solution containing pd the bats in the group without pd the length of sleep periods

Explanation:

The dependent variable is what is measured/observed. Here, researchers measured sleep length post-Pd inoculation.

Answer:

D. the length of sleep periods