Question

read the sample student claim and the reasons listed for making this claim. 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. reason #1: animal research has yielded both pain - relieving and life - saving drugs for humans. reason #2: laws prohibit scientists from using animal - based research in cases where non - animal testing would produce equally clear and valid results. which piece of evidence would best support reason #1? the history of using animals for research extends as far back as 322 bce, when early greek physician - scientists, such as aristotle and erasistratus, performed various experiments on living animals. animal research played an essential role in the development of herceptin and tamoxifen, two medications that have already saved the lives of thousands of women who have been diagnosed with breast cancer. even those who believe in testing on animals when it is necessary for vital medical research practice what is known as “the 3 rs”—reduction, refinement, and replacement—to reduce the number of animals used for testing. biologists believe that chimpanzees share at least 98.4 percent of the same dna as humans and

Explanation:

The reason #1 is about animal - research yielding pain - relieving and life - saving drugs for humans. The evidence about animal research playing an essential role in the development of Herceptin and Tamoxifen, two life - saving medications for breast cancer patients, directly supports this reason by providing specific examples of such drugs.

Answer:

Animal research played an essential role in the development of Herceptin and Tamoxifen, two medications that have already saved the lives of thousands of women who have been diagnosed with breast cancer.