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? 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. animal rights groups that are supported by millions of americans have stated that animal lives are no less valuable and meaningful than human lives. animals are used in research related to genetics, diagnosis, and development of new medicines and other products.

Explanation:

The first option provides a specific historical example where animal experiments led to the development of penicillin, which saved human lives. This directly supports the claim. The second option is a counter - argument from animal rights groups. The third option just states that animals are used in research without showing how it saves human lives.

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.