Answer:
B. -26
Here's a tip for next time:
First, enter the function into Desmos graphic calculator. Then, substitute x, -3 in this case, into the function to find the answer. The function in the calculator should look like this:
f(x) = -3^3 +1
Next, a line will appear and the point will give you your answer.
Desmos has helped me a lot, so hopefully it can be helpful for you too!