The given information is:
- You have 8 shirts
- 13 pants
- 9 belts
You need to figure out how many combinations of outfits you can make if you use 1 shirt, 1 pair of pants and 1 belt in each outfit.
We can apply the Fundamental Counting Principle to solve this problem, which states if you multiply the events together, you will obtain the total number of outcomes.
So:

The answer is C. 936