TOEFL Reading: ETS-TOEFL阅读机经 - 45K8X54Z124PSK1HL$

In paragraph 2, why does the author describe the hunting technique used by predators that hunt as a team? A. To explain why predators that hunt as a team wait until grazers start eating to attack B. To argue that species that hunt as a team do not have the same weakness as individual predators C. To emphasize that even predators that hunt in groups cannot hunt and attack more than one prey at time D. To help explain why grazers are at a particular disadvantage with certain predatory animals