Answer:
"B"
Explanation:
As human needs are unlimited and the resources to meet them are limited , the economist came up with a principle of managing human needs called opportunity cost.
Opportunity cost is defined as the cost of the alternative forgone or sacrificed.
Men are expected to list out his needs according to the order of priority due to limited resources to acquire them. The resources on top of the list are acquired to the extent that the available resources can cover. The cost of the un acquired items is referred to as the opportunity cost , being the cost sacrificed for the other items