When the levels of greenhouse gases in earth's atmosphere increase, which statement is true?

A gas that soaks and radiates energy in the IR region causes the greenhouse effect. Water vapor, carbon dioxide, ozone, methane and nitrous dioxide are greenhouse gases.

The correct answer is :

Option C. Earth's temperature increases because H out decreases.

This can be explained as:

Therefore, the temperature of Earth increases.

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Earth's temperature increases because Hout decreases.

Explanation:

The greenhouses gases are known to cover the earth just like a blanket. The greenhouse gases are known to increases day by day due to certain human activities like burning coal or natural gases. As a result, these green house gases get trapped in the Earth. This makes the heat from the Earth to get tapped in the Earth and not get dissipated. As a result, the temperature rises.  

the correct answer is b