Read the sample student claim and the reasons listed for making this claim.
Which piece of evidence would best support reason #1?
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.
O 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.
O 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.
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.
O 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.
O Biologists believe that chimpanzees share at least
98.4 percent of the same DNA as humans and
gorillas share at least 97 percent, making primates a popular and like choice for the testing of products intended for humans