Dr. Chen is an evolutionary psychologist. He has observed that many Africans are lactose-intolerant. He notes that this might be because of adaptation, a key concept in the evolutionary perspective.

Selective    

Explanation:

  The selective adaption is one of the key concept of the evolutionary perspective that helps in influencing the given perspectives for producing the sensory adaption.

The evolutionary perspective is one of the type of natural selection process in terms of personality and the individual differences.  

According to the given scenario, Dr. Chen is known as evolutionary psychologist and due to selective adaption the Africans are more lactose intolerant. Therefore, Selective adaptation is the correct answer.

the anti federalists was a movement that was opposed to the creation of a us federal government. although they were not as organized as the federalists, they also had a large group of leaders, especially in state politics.

the statement "now, in a large extended country, it is impossible to have a representation, possessing the sentiments, and of integrity, to declare the minds of the people” represents the concerns of the anti federalists.

they strongly believed that the federalists were representing the interests of aristocratic elements of society at the expense of the majority of ordinary people, who lived in a rural society.

their fear for the creation of a strong federal government and the president’s power of veto in their opinion would create a tyrannical rule that would dominate the people. they defended the importance of restraining the government’s power towards people at any cost.