Temperature inversions occurselect one: a. when surface temperatures are higher than overlying layers of air. b. when there is good air drainage and ventilation of the surface air. c. when surface temperatures are lower than warmer overlying air. d. during episodes of reduced air pollution.

The correct answer is letter C.

Explanation: Temperature Inversions are result of weather conditions in a area.

They most often occur when a warm, and less dense air mass moves over a dense, cold air mass.

It can happen, for example, when the air near the ground rapidly loses its heat on a clear night.

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