Producers are able to produce more of a good and to make more profit from a. high prices b. limited demands c. high production costs d. government involvement

The correct answer is A.

The question refers exactly to the direct relationship between price and quantity supplied represented by the supply function. The supply function represents the quantity of a certain good or service that producers are willing to offer at different price levels.

It is an upward-sloping curve, therefore, the law of supply states that there is a direct relationship between price and quantity supplied (ceteris paribus), and producers will be willing to supply larger outputs when prices are higher.

increase in population