An ____________ is the set of all possible combinations of the two inputs that yield the same level of output.

Isoquant

The correct answer is option 3: Isoquant

Explanation:

An Isoquant is the set of all possible combinations of two inputs (such as labor and capital) that yield the same level of output. It is similar to an indifference curve in consumer theory but applies to production instead of utility.

Why not the other options?

• Indifference curve: Represents combinations of goods that provide the same level of satisfaction (utility) to a consumer, not production.
• Budget line: Shows the different combinations of goods a consumer can buy given their income and prices, unrelated to production.
• PPF (Production Possibility Frontier): Represents the maximum possible output of two goods that an economy can produce with available resources, not input-output combinations in a firm.