Answer:
a. what must be sacrificed in using a resource for its next-best use
Step-by-step explanation:
The distribution of the scare resources or goods in the market system could consist of the consideration that could be sacrificing of a resource for the best use in the next time
So here in the given situation, the option A is correct as it fits to the given scenario and all the other options that are given are to be ignored as they are not relevant
Therefore the correct option is A.