Answer:
b. The producer who gives up less of other goods to produce Good X has the smaller opportunity cost of producing Good X
Explanation:
The opportunity cost is the cost of the best alternative.
In this case, the producer uses factors (labor, raw materials, capital) to produce good X. His opportunity cost is the goods he would produce instead of good X.
A producer who gives up less of the other goods means his best alternative is lower than one who gives up more.
For example
if a producer can do
10 good X
or 50 of good Y
The opportunity cost for good X is 5 units of Y
if another producer can do
10 good X
or 20 of good Y
The opportunity cost of good X is 2 units of Y
For this second producer, it is more feasible to produce X than the first producer. It renounces to fewer unis of good Y