Holding the non-price determinants of supply constant, a change in price would
a. result in a movement along a stationary supply curve.
b. result in either a decrease in supply or an increase in supply.
c. result in a shift of demand.
d. have no effect on the quantity supplied.

a. result in a movement along a stationary supply curve.

Explanation:

When all other factors affecting the quantity demanded and supplied are held constant, a change in price only result in a movement along the demand and supply curve respectively.

For supply curve, an increase in price of a good will result in an upward movement on the stationary supply curve and vice versa. Whereas, for a demand curve, an increase in price will lead to an opposite effect ; a downward movement on the stationary demand curve and vice versa.

250 tickets needs to be sold.

the correct choice is a