Answer :
If the side of a square is 5 feet.
The area of the square is = 5 ×5 = 25 ft²
Now as 5 people can occupy this space.
The area for each person = 25/ 5 = 5ft²
The dimension of the outdoor space are
Length = 500 ft
Width = 300 ft
The area of the outdoor space = 500 × 300 = 150,000 ft²
The number of persons which can be accommodated shall be 150,000/5
= 30,000
Option D) is the right answer.