[单项选择]　　 Some animal behaviorists argue that certain animals can remember past events, 　　anticipate future ones, make plans and choices, and coordinate activities within 　　a group. These scientists, however, are cautious about the extent to which animals 　　can be credited with conscious processing. (5) Explanations of animal behavior that leave out any sort of consciousness at 　　all and ascribe actions entirely to instinct leave many questions unanswered. 　　One example of such unexplained behavior: Honeybees communicate the sources of 　　nectar to one another by doing a dance in a figure-eight pattern. The orientation 　　of the dance conveys the position of the food relative to the sun’’s position in the sky, (10)and the speed of the dance tells how far the food source is from the hive. Most 　　researchers assume that the ability to perform and encode the dance is innate and shows 　　no special intelligence. But in one study, when experimenters kept changing the site of
A. The role of instinct in animal behavior
B. Observations that suggest consciousness in an anima behavior
C. The use of food in studies of animal behavior
D. Differences between the behavior of animals in their natural environments and in laboratory experiments.