The correct option is
D The length of the green block is x and its width is y. So, its
area = xy. Hence, the region can be represented as xy.
The length of the purple block is y and its width is y. So, its
area = y
2. Hence, the region can be represented as y
2.
The length of the yellow block is y and its width is x. So, its area = xy. Hence, the region can be represented as xy.
The length of the blue block is x and its width is x. So, its
area = x
2. Hence, the region can be represented as x
2.