GMAT Test Prep: CR-34505585 GMAT Critical Reasoning

A program instituted in a particular state allows parents to prepay their children’s future college tuition at current rates. The program then pays the tuition annually for the child at any of the state s public colleges in which the child enrolls. Parents should participate in the program as a means of decreasing the cost for their children’s college education.

Which of the following, if true, is the most appropriate reason for parents not to participate in the program?
Select one of the following answer choices