The point at which the total product stops increasing at increasing rate and starts increasing at decreasing rate is called

The correct answer is C. inflexion point.

An inflexion point is a point on a graph where the curve changes its direction from concave up to concave down or vice versa. In the context of economics, an inflexion point is the point at which the total product stops increasing at increasing rate and starts increasing at decreasing rate.

Break even point is the point at which the total revenue equals the total cost. Shutdown point is the point at which the total revenue is less than the total variable cost.

I hope this helps! Let me know if you have any other questions.