The following shows a com maze for participants to walk through. The participants can only go forward and when there is a fork in the path you
may assume that people are equally likely to take any one of the paths. It
costs $5 to enter the maze and each participant gets $10 if they come out
in a prize area. Using a tree diagram or an area model determine the
probability that a participant wins money?

0.25
0.31
0.43
0.50