A chimpanzee using a long twig to catch termites is an example of a?

This is a classic example of tool use.

Here's why:

* Tool: The chimpanzee is using an object (the twig) that is not part of its body to achieve a goal.

* Goal: The chimpanzee is using the twig to access a food source (termites).

This behavior demonstrates that chimpanzees are capable of understanding the properties of objects and using them in a purposeful way.