Chapter 5 - Normal Probability Distributions - Section 5.1 Introduction to Normal Distributions and the Standard Normal Distribution - Exercises - Page 242: 12

The graph is bell shaped and symmetric about the mean therefore this represents a Normal distribution.

Through a basic visual analysis we see that the curve is bell shaped. With the same analysis we can also determine that the graph is symmetric about the mean so we can infer this is representative of a Normal distribution curve.