You are presented with the quiz "how is a greenhouse used to protect plants?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "agreenhouse is used to protect plants by keeping them warm" and "if the weather is warm, their temperature rises". So, what's the best answer to the question?

Available options: A. prevent heat loss B. raising their temperature C. storing water D. reusing materials E. increase oxygen F. It helps them survive G. reflecting light H. evaporative cooling
Answer:
B.