To find the average rate of change of a function on an interval \([a, b]\), you can use the formula:
\[ \text{Average Rate of Change} = \frac{f(b) - f(a)}{b - a} \]
You need the values of the function at the endpoints \(x = 1\) and \(x = 3\), denoted as \(f(1)\) and \(f(3)\). However, you didn't provide the function graph or any data regarding its values.
If you provide \(f(1)\) and \(f(3)\), I can help you calculate the average rate of change. Based on the options you provided, the average rate of change would come out to one of those values, but specific values are needed to determine which one it is.