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.

answer; i believe the correct answer is customer,manufacturer, service provider,general public ; quality is primarily the responsibility of all all employees in the organization.

rain should be the answer.