Final answer:
The main objective of a firm, according to economists, is to make a profit. Individuals start businesses with the purpose of making profits. Making decisions that improve their own well-being, such as determining the quantity of goods to produce and the price to sell them, is a key aspect of this objective.
Step-by-step explanation:
Economists assume that the main objective of a firm is to make a profit. Profits are the measurement that determines whether a business stays operating or not. Individuals start businesses with the purpose of making profits, and they make decisions that will make themselves better off. This includes decisions related to the quantity of goods to produce and the price at which to sell them.