TOEFL Listening: TPO-TOEFL阅读TPO - 69BO5466DZ9Z143BN$

Which of the following reasons is suggested in paragraph 2 for the extinction of the dinosaurs? A. Changes in the lengths of the days and nights during the late Cretaceous period B. Droughts caused by the movement of seaways back into the oceans C. The change from mild to severe climates during the Late Cretaceous period D. An extreme decrease in the average yearly temperature over 10,000 years