Final answer:
The text compares chimpanzees to dolphins, indicating that both species exhibit high levels of intelligence in the animal kingdom. The correct option is B.
Step-by-step explanation:
The text compares chimpanzees to dolphins in terms of intelligence within the animal kingdom. While the passage first cites the intelligent behaviors of chimpanzees, such as their use of tools, memories, and empathy, it then references dolphins and their complex language abilities as another example of brilliance in animals. This comparison highlights the fact that high intelligence is not unique to primates like chimpanzees, but is also found in other species like dolphins, which showcase sophisticated cognitive traits as well.