There are currently 435 voting representatives.
Answer: 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 answerrrrrrrrrrrrrrrr is B
The Tennessee Valley Authority is a federally owned corporation in the United States created by congressional charter on May 18, 1933, to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development to the Tennessee Valley.