Question

consider this claim:
animals should be used for research because animal research saves human lives.
which is the strongest evidence to support the claim?
animals are used in research related to genetics, diagnosis, and development of new medicines and other products.
animal rights groups that are supported by millions of americans have stated that animal lives are no less valuable and meaningful than human lives.
bacterial infections were once a major cause of death, but animal experiments led to the development of penicillin, which radically changed our ability to treat these infections and prevent death.

Explanation:

The claim is that animals should be used for research because it saves human lives. The first option just states animals are used in research - no direct link to saving lives. The second option is about animal rights groups’ view on animal lives being as valuable as human lives - which is against the claim. The third option gives a specific example (penicillin development via animal experiments) that shows how animal research led to a treatment that prevented death (saving human lives), directly supporting the claim.

Answer:

Bacterial infections were once a major cause of death, but animal experiments led to the development of penicillin, which radically changed our ability to treat these infections and prevent death.