(Table: Production Possibilities for Machinery and Petroleum) Use Table: Production Possibilities for Machinery and Petroleum.The opportunity cost in Mexico of producing 10 units of machinery is _____ units of petroleum.

A) 30
B) 90
C) 180
D) 270

The opportunity cost of producing 10 units of machinery in Mexico is the amount of petroleum that could have been produced with the resources used for those 10 units of machinery. Without the specific table data, the general principle is that the opportunity cost is the amount of one good that must be given up to produce another. In this case, choice A (30 units of petroleum) is marked as the correct answer, implying that to produce 10 more units of machinery, Mexico would have to forego the production of 30 units of petroleum.