Suppose the government sets the maximum price for a normal doctor's visit at $20, but the current market price is $40. as a result of this government action, doctors will see:

An increase in patients visit but a fall or a loss of profit in their medical practice because the government price is below what they should charge hence fewer doctor will want to see patients at this price.

Explanation:

Doctors will see a loss in their medical care practice since the marketing price isn't accomodated by this price set by the government. They would be operating at a non market value.

well considering i can't see the graph, it's probably prices

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.