400
Third and perhaps most important of all, Jessie realized
that an improvisational actor needed to do more than just prattle on. To create a scene that worked, he or she needed to become a believable character and also understand who the other characters onstage were in order to find ways to respond to them.
In line 6, prattle shows that Jessie originally
thought that improvisational actors:
A could say whatever popped into their heads
B recited lines they had memorized
C spoke in ways that were meaningful and
believable
D did not need to speak loudly and clearly
What is could say whatever popped into their heads.