Dolphins are:
A. Mammals
B. Fish
C. Hominids
D. Reptiles
Question 2
A dolphin deprived of contact with other dolphins _____.
A. becomes emotionally upset and may actually become sick and die because of this
B. thrives because this is its preferred state
C. begins singing highly complex songs that signal whether it is or is not interested in joining a dolphin community
D. is no longer able to find enough food, and so it invariably becomes sick and dies