Explanation:

The ability of a surface to reflect sunlight is measured by its albedo. Higher albedo means more sunlight is reflected. Let's analyze each option:

Sand desert → (A)

• Reflects sunlight but also absorbs a significant amount. Albedo: ~30-40%

Prairie land → (B)

• Grasslands absorb more sunlight than deserts. Albedo: ~15-25%

Land covered with fresh snow → (C)

• Fresh snow has the highest albedo among natural surfaces, reflecting 80-90% of sunlight.

Paddy crop land → (D)

• Croplands, especially with water, absorb more sunlight. Albedo: ~10-20%

Since fresh snow reflects the most sunlight compared to the other options, the correct answer is (C) Land covered with fresh snow.