The opportunity cost of increasing production of good a from 1 unit to 2 units is the loss of

Being able to produce a certain number of units of a different good.

Opportunity cost is what you give up in order to do something else, and in production the more of one type of good you produce, the higher your opportunity cost for any other different good becomes.

answer; im thinking the correct answer is (7years);

the specific actions take by the fed. what the fed was attempting to do by taking these actions. the result of the actions taken by the fed