When they arrive at the store, ling meets aunt wu. who is aunt wu and what is her relationship with ling’s mother?

i think it would be   c)   the raw   materials necesarry to produce   goods

i think im right about 70%

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.