Answer:
A. 15
Step-by-step explanation:
The fundamental counting principle states if there is<em> a</em> outcomes/options and <em>b</em> outcomes/options, the total number of outcomes is a*b.
a * b
There are 3 sizes: small, medium and large
There are 5 flavors: strawberry, banana, orange, blueberry, and watermelon.
Therefore, we can say that <em>a</em> is 3 (sizes) and <em>b</em> is 5 (flavors).
3 * 5
15
Here is another way to think about it.
You can order a small smoothie five different ways, a medium five different ways, and a large five different ways.
5+5+5=15
Therefore, there are 15 total outcomes and A is correct.