Chimps, unlike humans, are limited to using nearby natural materials to make a tool to gather the stinging ants. In your own words, state the design problem faced by the chimp.

I am going to try my best to answer this question.

Explanation:

The design problem faced by the chimp is that they wouldn't be able to find the materials need to get the stinging ants.  

                                                            or...

The design problem faces by the chimp is that they wouldn't find the right length stick or the right width needed to get the stinging ants.

hopefully this helped you:)

the answer to your question is tooth decay.