TOEFL Reading: ETS-TOEFL阅读机经 - 1NW7052K13X23333L$

Why does the author include the information that animals in the deep ocean place an "emphasis on lures" and have evolved "elongated appendages?" A. To argue against the view that animals in the deep ocean use more energy to find food than do animals in shallow waters B. To emphasize the importance of an animal's ability to control a large volume of water C. To identify some feeding strategies that animals have developed to minimize their energy expenditure D. To give examples of body structures that help those animals move quickly in deep ocean waters