Question

a large number of plumbers will begin working this year. what will happen to the supply of plumbing services? what is the reason for the shift (or no shifter)? cost of inputs number of producers conditions dues to natural disasters or international events changes in technology producers expectations changes in government policies no supply shifter

Explanation:

The supply of plumbing services will increase because more plumbers (producers of plumbing services) are entering the market. The factor causing this change in supply is the number of producers.

Answer:

The supply of plumbing services will increase.
B. number of producers