Which economic concept is illustrated in these drawings?

In drawing number one, the owner of a video game store says "wow this game is becoming popular". In drawing number two, there is a sign that says "next week" and the owner of the store says "it's a good thing I increased my supply"

(1 point)
Responses

Consumer sovereignty
Consumer sovereignty

Profit margin
Profit margin

Opportunity cost
Opportunity cost

Central planning
Central planning