A character that imagines new possibilities is your answer :)
The possibility or likelihood of some future event occurring. (Do you mean the meaning of the word, or do you want me to write it “acrostic” like make it a poem?
I am pretty sure it would be massive because it is an English question. If you are doing a multiple choice question you should see which one fits the best. If could also be positive impact.
Answer:
a. you mustn't stop here.
b. you don't have to eat meat.
C. they mustn't cut the rope.
d. she don't have to be quiet.
E. mike don't have to go to the doctor.
f. Derek and Steve mustn't attend church.