Answer:
Decrease
Explanation:
Supply refers to the volume of a product that suppliers are willing to avail in the market for sale at a given price. As per the law of supply, higher prices encourage suppliers to increase supplies to the markets.
An increase in the price of cars will motivate the factors managers to opt to make more cars. The factory is a business entity motivated by profits. Higher car prices result in more profits from selling cars. The factory will use more resources to produce many cars at the expense of trucks. Consequently, the supply of trucks will reduce.
