Answer:
price floor
Explanation:
A price ceiling is a limit that is established by the government that determines the highest price that can be charged for a product or service.
A price floor is a control that is established by the government that determines the lowest price for a product or service.
According to this, the answer is that the minimum wage is an example of a price floor because it determines the minimum amount that a company can pay to a worker.
The other options are not right because a price ceiling establishes the highest price for a product and price door and price wall are not price controls.