Final answer:
The baking time for a small pepperoni pizza is likely to be the same as that for a small plain pizza.
Step-by-step explanation:
If a small plain pizza takes 12 minutes to bake, we can use this information to estimate the baking time for a small pepperoni pizza. Assuming that both pizzas have the same thickness and are baked at the same temperature, we can infer that the baking time for the pepperoni pizza would be the same as the plain pizza, which is 12 minutes. This is because the topping of pepperoni would not significantly affect the baking time.