What evidence would most weaken the counterclaim

presented here?

The physiologies of humans and some animals are very

similar, so the reactions of these creatures to certain

medications are the most reliable guide to the possible

reactions of human patients.

Scientists are more easily able to control an animal's

environment, such as diet and temperature, than they are

that of humans, which makes the tests far more reliable

than alternative methods.

Animals have emotions and can feel pain much as

humans do, which is why I feel that it is cruel to subject

these vulnerable creatures to unfair tests that we are

unwilling to conduct on humans.

If we ban testing on animals for medical research that

could save lives, then it also must be made illegal to hunt

and kill animals simply because we would like to include

The physiologies of humans and some animals are very similar, so the reactions of these creatures to certain medications are the most reliable guide to the possible reactions of human patients.

Scientists are more easily able to control an animal's environment, such as diet and temperature, than they are that of humans, which makes the tests far more reliable than alternative methods.

Explanation:

According to a different source, these are the claim and the counterclaim that come with this question:

Claim: Although many people argue that medical testing on animals is a violation of animal rights, the benefits it yields for society far outweigh any argument that can be made.

Counterclaim: There are safer and more accurate ways to test medications without using animals.

This is the evidence that would most weaken the counterclaim. In this example, the counterclaim states that there are other safer and more accurate ways of testing medications besides the use of animals. However, this evidence shows that these tests are the most accurate because of the similar physiologies of some animals and some humans. It also shows that these tests are safer because it is easier to control an animal's environment than that of a human.

what of the following? i don't know about you but i see no multiple choice answers.

what passage are you referring to