If the Earth was in a warming trend, which of the following processes would most likely act as a negative feedback mechanism?

Question

Quizplus · Accepted Answer

Increasing snow cover around the Earth would reflect more solar radiation back into space, reducing the amount of solar radiation absorbed by the Earth's surface and acting as a negative feedback mechanism to counteract the warming trend. Decreasing cloud cover (A) would lead to more solar radiation absorbed by the Earth's surface and increase warming, increasing carbon dioxide content (B) would enhance the greenhouse effect and trap more heat in the atmosphere, and increasing water vapor (D) would also enhance the greenhouse effect as water vapor is a potent greenhouse gas.

If the Earth Was in a Warming Trend, Which of the Following