The correct answer is: D. are
Kites are available in many colors and shapes. This is because kites are made from a variety of materials, including paper, cloth, and plastic. These materials can be dyed or printed with different colors and patterns. Additionally, kites can be made in a variety of shapes, including squares, triangles, and diamonds. The shape of a kite affects its flight characteristics, so kitemakers often experiment with different shapes to create kites that fly well in different conditions.
The other options are incorrect because they do not accurately describe the availability of kites in different colors and shapes. Option A, “have,” is incorrect because kites do not have colors and shapes. Option B, “many,” is incorrect because kites are not a collection of colors and shapes. Option C, “do,” is incorrect because kites do not perform the action of being available in different colors and shapes.