In our culture, nodding your head up and down is a deliberate nonverbal behavior with a very precise meaning of "yes." according to your text, this is termed a(n):

The correct answer is emblem. Emblem is being defined as a design or a visual object by which it represents a certain group, quality or type or that it is also determined as a visible symbol that is responsible for representing a certain idea.

to stay where they were until m sent for

me no say