The correct statement about the sun's energy on the Earth's surface is:
• It warms the air masses.
The other statements are also related to the sun's energy, but they are not specifically about the energy itself on the surface. For example, changes in seasons are caused by the tilt of the Earth's axis, while day and night result from the Earth's rotation. Sunlight is not evenly distributed across the Earth due to factors like the curvature of the Earth, which leads to varying angles of sunlight depending on the location.