Final answer:
Crunchy peanut butter is a heterogeneous mixture.
Step-by-step explanation:
Crunchy peanut butter can be classified as a mixture and a heterogeneous mixture.
In terms of its composition, peanut butter is a mixture because it is made up of different components, such as peanuts, oil, and other ingredients.
It is also a heterogeneous mixture because its different components are not evenly distributed throughout the mixture. In crunchy peanut butter, you can see and feel the solid peanut pieces, making it a heterogeneous mixture.