I'm not exactly sure, but to use common sense, I'd say eye-contact. You explicitly said, "nonverbal," and eye-contact is the most reasonable one.
It means to understand how sweet success "tastes", you have to have a need or real desire to succeed.
I think it's likely to be B.
Answer:
Unrelated
Explanation:
Compete means to be a competitor. Complete means to finish. Unrelated
