The host states that it is easier to identify genes that cause illness in families. In order to do this they studied people in .

A. Iceland

B. India

C. America

A. Iceland

Explanation:

Island is an island and it may lead to high rates of endogamy due to the availability of mates. Endogamy is the practice of having sexual relations only within a small group (in this case, the small group is represented by people living in the island). Endogamy is a reproductive behavior that is associated with the likelihood suffer genetic disorders because the recessive alleles are exposed to selection

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .