Answer:
The price of ice cream increases - The demand for caramel topping will decrease
The price of caramel topping decreases - The demand curve for caramel topping will remain the same.
The price of butterscotch topping increases - The demand for caramel topping will increase.
Step-by-step explanation:
If the price of icecream increases , it would become expensive to make them. So producers would reduce quantity supplied of ice cream. As a result of the reduced supply, there would be less demand for caramel toppings.
Caramel and butterscotch toppings are subsituites. If the price of butterscotch toppings increase, the demand for caramel toppings would increase.
If the price of caramel toppings reduce, the quantity supplied would fall. This would lead to a movement along the demand curve and not a shift of the demand curve.