An isoquant is . . . . . . . . to an iso-cost line at an equilibrium point.

The correct answer is: C. Tangent

An isoquant is a curve that shows all the combinations of inputs that produce the same level of output. An iso-cost line is a line that shows all the combinations of inputs that can be purchased with a given budget.

At an equilibrium point, the firm will be using the least-cost combination of inputs to produce the desired level of output. This means that the isoquant and the

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