Question

how are winds formed?
the earths orbit around the sun creates tides in the mesosphere.
wind is formed due to the properties of nitrogen in the atmosphere.
motion at the earths surface causes wind to start
differences in air pressure cause air to move from high pressure areas to low pressure areas

Explanation:

Winds are created by differences in air pressure. Air moves from areas of high pressure to areas of low pressure. The Earth's orbit around the sun creating mesosphere tides is not related to wind - formation. Wind is not formed due to nitrogen properties in a direct causal way. Motion at the Earth's surface is a result of wind rather than its cause.

Answer:

D. Differences in air pressure cause air to move from high pressure areas to low pressure areas