Question

read the sample student claim and counterclaim.

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.

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 animals 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

Explanation:

Analyze the counterclaim

Using the Counterclaims knowledge point, we identify the opponent's argument: "There are safer and more accurate ways to test medications without using animals." To weaken this, we need evidence showing alternative methods are not safer or more accurate.

Evaluate the evidence options

Using the Rebuttal Evidence knowledge point:

• Option 1 states animal testing is the most reliable guide due to physiological similarities. This directly challenges the "more accurate" part of the counterclaim.
• Option 2 discusses environmental control, which is less direct than physiological reliability.
• Option 3 supports the counterclaim's ethical stance rather than weakening it.
• Option 4 introduces an irrelevant comparison to hunting.

Thus, Option 1 is the strongest rebuttal.

Answer:

• (A) 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. (Correct answer)
• (B) 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.
• (C) Animals have emotions and can feel pain much as humans do, which why I feel that it is cruel to subject these vulnerable creatures to unfair tests that we are unwilling to conduct on humans.
• (D) 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