Final answer:
In economics, the marginal cost curve intersects the average cost curve from below, crossing it at its lowest point.
Step-by-step explanation:
In economics, the marginal cost curve intersects the average cost curve from below, crossing it at its lowest point. This occurs because when the marginal cost of producing one more unit is below the average cost of producing previous units, producing an additional unit reduces the overall average costs. The intersection of the marginal cost curve and the average cost curve at its lowest point signifies the efficient allocation of resources and optimal production level.