Have you ever had to sign a non-disclosure agreement? Have you ever violated a NDA?

"I've signed a few NDAs in my time, and have zero issue doing so here. Honestly, I expected as much, considering the company's long tradition of preserving the secret formulas of their success."

Hershey's is very protective of their trade secrets and guarded about their traditional recipes. It is very likely you'll have to sign an NDA in order to work with them. So this question is self-obvious in nature. They'll gauge how you respond to evaluate your honesty and integrity. This question is all about what the semantics of your answer reveal about you and your intentions. Choose your words carefully. Honesty and communication go hand in hand. An effective communicator is an honest one.