Answer: It’s help other actors recognize their cue.
It’s D :)
Anything that gets in the way of effective communication
I would say C. “was”. It’s definitely not “am”, because that just sounds completely wrong. It’s not “are” because that sounds a bit wrong, too. It can’t be “were” because it’s only referring to one group, not many groups. The only answer it could be is C.
The answer is D, bc when you flashback, you go back in time to when something happened