Answer:
movement along the demand curve : An increase in the price of donuts
shift of the demand curve : A change in tastes of consumers that makes them desire more donuts
An increase in the number of consumers
Explanation:
only a change in the price of a good would lead to movement along the demand curve for that good. other factors lead to a shift of the demand curve.
an increase in the price of donuts would lead to a reducing in the quantity demanded of donuts. it would lead to a downward movement along the demand curve.
A change in tastes of consumers that makes them desire more donuts and An increase in the number of consumer would lead to an outward shift of the demand curve