Young adulthood is a time when a person is in their twenties and often attends college or is in another kind of education. During this time a person has to invest in the their future, while learning how to be financially independent, but the person does not yet other problems, such as ailing health.
So the correct answer is: b. developing financial freedom.
The delegates to the 1787 Convention represented a new generation of American leaders because of their age, mostly in their 30's and they were very open to change.