Biological anthropologists view how humans come to be the way they are as the result of .a. both evolutionary history and their own individual life histories. b. what their genes make them; environment has very little effect. c. their biological makeups, which primarily define who they are. d. their environment; genes have very little effect.

Option (a) is correct

Explanation:

Biological anthropologist are the people who study behaviors and biological characteristic of humans residues,ancient resources etc.

According to the question, biological anthropologist study the mechanism of environment adaption, evolution, history of development and existence, variation and origin of human beings.

Other options are incorrect because genes effect, makeup of biology and environment impact are not the factors that defines humans as per concept of anthropologist.Thus, the correct option is option(a)

the two sets of lines are :

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska