Question

at which point is the slope of the function equal to zero? a b c d

Explanation:

Step1: Recall slope - tangent relation

The slope of a function at a point is equal to the slope of the tangent line to the curve at that point.

Step2: Analyze tangent slopes at points

At point B, the tangent line to the curve is horizontal. A horizontal line has a slope of 0. At points A, C and D, the tangent lines are not horizontal.

Answer:

B