Why are scarcity and choice basic economic questions faced by every society? A. Opportunity cost leads to tradeoffs when bountiful resources exist.
B. Scarcity leads to having to make choices which cause opportunity cost.
C. Unlimited options are a result of unlimited wants and needs in society.
D. Our resources are unlimited, yet our wants and our needs are limited.

D. Our resources are unlimited, yet our wants and our needs are limited.

Explanation:

Because every good or service has a limit to be reached and people have to decide what to choose based on their needs and wants.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;