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.
Answer:
do we have to literally type an essay out on this?
Explanation:
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Structure in writing depends on what the objective - what the writer is trying to convey. If it is an argument, the structure will include a problem statement, supportive explanations and a conclusion. If it is a narrative, the structure can be subjective - the narration will go along with the observer throughout; or it can be chronological - a description based on time order. If it is simply writing something personal, then the structure can be flexible and free flowing.
Answer:
yup thats correct i think