Answer:
I believe that Walter Lee Younger is the character that presents the most change from the beginning to the end of the series.
Step-by-step explanation:
Walter Lee Younger starts the play extremely concerned with how he will solve the problems that his family has. This concern makes him take irresponsible and risky attitudes like investing his family's money in a liquor store that did not have a well-defined investment plan. However, after losing all the money, he understands that he cannot succeed on his own and cannot solve problems that are too big for him alone. He will only be able to solve it through the union and the help of the whole family, who must act in consensus.