Identify the choice that best completes the statement or answers the question. Sunlight shines through the greenhouse windows all day. Even on cloudy days, a lot of light penetrates the clouds and passes through the glass. Which of these statements describes what happens to that energy?

A. The energy that is not used by the plants for growth is destroyed.

B. The energy not absorbed by the soil is destroyed or reflected back out of the greenhouse.

C. The energy is lost through conduction and convection processes.

D. The energy remains, is reflected away, or is changed into different forms of energy.