TOEFL Reading: ETS-TOEFL阅读机经 - P57IG9387CAN3K83L$

Paragraph 3 supports which of the following statements about the artificial lights now found on many beaches? A. The lights have sometimes helped sea turtle hatchlings find their way to the sea. B. The lights can be bright enough to affect sea turtle hatchlings within hundreds of meters of them. C. The lights are commonly turned off during periods when sea turtle offspring are hatching. D. The lights tend to affect the behavior of sea turtle hatchlings less than other programming signals do.