【单选题】Observations of cetaceans in the wild have provided some insights on their learning abilities. Several bottlenose dolphins off western Australia, for instance, have been observed carrying large cone-s...
A.
It is not appropriate to judge cetacean intelligence in human terms.
B.
Cetaceans probably possess a mental sophistication that is as complex as that of humans.
C.
Although cetaceans may appear to be intelligent, they have fewer problem-solving skills than most animals,
D.
Their ability to learn American Sign Language indicates that cetaceans have a high level of intelligence.