Since regulations mandate to open a day care is 35 sq. ft of space per child.
So space needed for 15 children = number of students × space required for one child = 15 × 35 = 525 sq. ft.
So option 2 is correct.
To evaluate whether space of 22×24 ft is sufficient we will divide the total space by number of students. If the result matches with regulations mandate then space is sufficient.
Space for one student from the given space = (22×24)/15 = 35.2 sq. feet
This space is bigger than the mandate of minimum space of 35 sq. ft.