Answer: heredity; environment
Explanation:
There is a much better appreciation now for the influence that
environment (things like nutrition, schooling, enriched stimulation, etc),can have on intelligence - intelligence can change!
(reaction range is the name of the outer limits set by heredity)
It is to deliver appropriately qualified civilian men for the induction into the Armed Forces of the US as authorized by Congress.
A. find problems that could cause a collision or a break-down