A zeitgeber is a(n) ____.
a. biological clock
b. animal that does not have a biological clock
c. environmental cue that resets a biological clock
d. body activity that is controlled by a biological clock
Question 2
In the context of the three Rs of animal research, refinement refers to ____.
a. reducing pain and discomfort
b. recognizing potential confounders
c. reusing prior research analysis
d. recombining effective statistical tests