TOEFL Reading: ETS-TOEFL阅读机经 - 416H63JAT3AOBJ7DL$

What can be inferred from paragraph 6 about what would likely occur if cloud cover increased worldwide? A. Different materials would become more similar to each other in their reflectivity. B. It would become a greater necessity to convert forests into plowed land and cities. C. A large percentage of incoming solar radiation would be reflected back into space. D. The reflectivity of ice and water would change and become greater over time.