Final answer:
If Dawn does not order vanilla ice cream, she can make 12 different choices for flavor, cone, and topping.
Step-by-step explanation:
If Dawn does not order vanilla ice cream, she will have two choices for the flavor of ice cream: chocolate or strawberry.
For the type of cone, she will have two choices: sugar or wafer.
Lastly, for the topping, she will have three choices: sprinkles, nuts, or cookie crumbs.
To find the total number of different choices Dawn can make, we multiply the number of choices for each category:
2 (flavor of ice cream) x 2 (type of cone) x 3 (topping) = 12
Therefore, Dawn can make 12 different choices that have one flavor of ice cream, one type of cone, and one topping.