The correct answer is:

D. paddy fields

Explanation:

• "Paddy fields" are fields where rice is grown, and it is common to see kites flying over these fields in many rural areas.
• "Crops" are plants that are grown, "orchards" are places where fruit trees are grown, and "gardens" are usually for vegetables or flowers, but none of these specifically fit the context of flying kites as "paddy fields" do.