Answer:
Point A
Option A is correct
Explanation:
We are given a graph where are four points plot on graph.
A, B, C and D
The given graph is logistic function. It is graph of logistic because first increase gradually and then increased slowly and then becomes constant.
At point A, Increase gradually ( exponentially)
At point B, Function change order. Increase gradually to slowly.
At point C, Increase slowly ( square root function)
At point D, constant ( no change in function )
We need to find point where exponential growth occur.
Hence, At point A exponential growth happening.