If we has to choose either to use a land for green space or build something for other important purposes, I think the ??? is better ???:the [former/latter]
As [Student] [pointed out/said/mentioned/suggested/recommended/discussed], hospital can provide medical care, which would be more urgent than visiting a park. (改寫某位同學的話) However(推翻), parks can also provide long-term health benefits that can be more important than hospitals. For example, exercising like jogging or walking a dog can improve one’s stamina. This can boost one’s immune system, and prevent somebody from getting sick. As a result, they are less likely to need to visit a hospital in the future.