Question

question 3
3 tries left
what is the biggest reason we use animals in research?
animals dont live as long as humans.
animals are easier to control.
animals have simple behavior that makes it easy to see changes.
we can do things to animals that we cant do to people.

Explanation:

In research, ethical guidelines prohibit certain invasive or harmful procedures on humans. Animals are used as surrogates in such cases. While the other options have some truth, ethical - permissibility is the major factor.

Answer:

We can do things to animals that we can't do to people.