What is the term for variations in a language, mainly in grammar and semantics?

Responses from the audience during and after the speech, indicating their reactions to what you have

said are known as ________. Fill in the blanks with correct word

In the hallway outside of class, Jaclyn is recounting to Donovan the events of her weekend party, complete with details of the beer pong contest and the arrival of the police

When they enter the classroom, however, Jaclyn lowers her voice, greets her professor, and settles in to her seat politely. Her changes of behavior reflect Jaclyn's sensitivity to which key element of communication? a. Source b. Noise c. Channel d. Context