TOEFL Listening: TPO-TOEFL阅读TPO - B5841A976I64IWUZN$

According to paragraph 5, why were the howler monkeys in French Guiana translocated? A. Local hunting had dramatically reduced their population density. B. Predators had significantly reduced the number of individuals. C. The females of the species had lost their normal behavioral patterns. D. Their original site was going to be significantly modified.