#### Answer

(a)

#### Work Step by Step

Step 1. The leading term of the function is $x^5$, with a coefficient of $+1$ and an odd power. Thus, we can identify its end behaviors as $x\to-\infty, y\to-\infty$ and $x\to\infty, y\to\infty$. That is, the curve falls to the left and rises to the right.
Step 2. Based on the above result, we can match the function to graph (a).