because mathematically 0 less than or equal to x less than or equal to 4 means starting from 0 up to 4 is the domain of the graph
but if we were asked about the range it was going to be all real number (B) because if the range means the value of y then y have solution in all the way down
As you can see this figure is a rectangular prism. Two sides are squares. When the figure is cut facing the squares, the resulting shape will be a square.
