Answer: They give the actions described a feeling of importance.
Explanation:
A koala in a tree found a water bottle
I believe the function of the sentry and the messenger is C) they inform major characters of events that happen offstage.
"Consequently, some students have become so frustrated with the long lines that they have resorted to patronizing the vending machines" and "Those of us who take part in after-school activities or have jobs often don’t get home until late in the evening. Then we are usually too exhausted to put our best effort into our homework."
