After a few weeks in school, all students know that they should raise their hand if they want to speak in class. this is an example of what aspect of communication?

Nonverbal communication.

Nonverbal communication is the exchange of information through the use of cues instead of words. In this case, by the cue the student gives (raising his hand), the teacher know that he wants to speak.

is this an essay or multiple choice

hey,

i hope you are having a wonderful day

the correct answer is :

{b.}   ( american workers lose job opportunities )

hope this : )

    -sprinkles