Answer: D- a mechanism for evolution
Explanation: The mechanism for evolution refers to the changes in allele frequencies within a single population.
There are four fundamental forces of evolution: Natural Selection, Genetic Drift, Mutations and Gene Flow
One of the main controversial issues in population genetics is concerned with the relative importance of both mechanisms in determining evolutionary changes
It's caused by Alzheimer's and vascular dementia
Spiritual health is the answer
The answer to your question is B, "He did something to help the continental army."