Final answer:
The opportunity cost for Chuck to produce one more bushel of apples in terms of pears is 2 bushels of pears.
Step-by-step explanation:
The opportunity cost for Chuck to produce one more bushel of apples in terms of pears can be calculated using the concept of opportunity cost. Opportunity cost refers to the value of the next best alternative that is forgone when a choice is made. In this case, Chuck can produce a maximum of 40 bushels of pears or 20 bushels of apples. Therefore, the opportunity cost of producing one more bushel of apples in terms of pears is 40/20 = 2 bushels of pears.