________(48)
A.However,they just don’t have as much fun as children in small towns.
B.Children in the cities had few options,fewer choices of places to play.
C.Why is there no place children in cities to play?
D.One clear finding from their studies is that people need green spaces for better mental health.
E.However,tending window boxes isn’t the same as being an amateur gardener and growing peas,tomatoes and salad greens in a backyard garden.
F.these are the spaces that no one uses and they are everywhere.