Theme Park Rules
1. No outside food allowed inside the park; water is allowed.
2. Free re-entry into the park with a hand stamp.
3. Re-entry into the parking lot costs $2.
4. Food and drink are allowed in the outside picnic area
Friend Alisa, Bailey, Chelley, and Diana visited a theme park. Two hours after entering the park, they decided they needed some water to drink.
Which girl made the most financially responsible decision?
(Assume there is no tax on any of the purchases)
Diana left the park in her car, bought two $3 water bottles at the corner store, then reentered the parking

Question

Theme Park Rules
 1. No outside food allowed inside the park; water is allowed.
 2. Free re-entry into the park with a hand stamp.
 3. Re-entry into the parking lot costs $2.
 4. Food and drink are allowed in the outside picnic area
Friend Alisa, Bailey, Chelley, and Diana visited a theme park. Two hours after entering the park, they decided they needed some water to drink. 
Which girl made the most financially responsible decision?
(Assume there is no tax on any of the purchases)
Diana left the park in her car, bought two $3 water bottles at the corner store, then reentered the parking