Question

A minimum price, set by the government, that must be paid for a good or service is called a _____.

A. price wall
B. price floor
C. price field
D. price ceiling

Answer 1

The answer is B : Price Floor

Answer 2

"Minimum" means a solid barrier under you, so you can't go
through it to any place that's lower. There are several of those
in your house.

Each one is called a ' floor '.