The greenhouse effect can be compared to ...

A) a car with it's windows closed parked in the sun.

B) a person lying on a sunny beach.

C) steam coming off of a pot of boiling water.

D) heat coming off a fire.

Yep A is the right answer.

A, a car parked in the sun with its windows closed.

The greenhouse effect is where there is so much pollution in the air, the heat from the sun cant escape the earth. just like a parked car with its windows closed, the heat generated inside of it will build up. all three other examples allow the heat to move freely.