Question

question 32
which is true of dolphins and whales?
evidence shows they have a similar intelligence to humans.
their brains are similar to the human brain because of the environment they live in.
their social relationships contributed toward the size of their brain.
they are more intelligent than humans.

Explanation:

• Dolphins and whales are highly social animals. Social complexity often drives brain evolution. In many species, including some primates (and by extension, potentially cetaceans like dolphins and whales), social interactions, cooperation, competition within social groups can lead to selective pressures that favor larger brain sizes (as more complex social behaviors may require more cognitive processing).
• There is no evidence that dolphins and whales have similar intelligence to humans (let alone being more intelligent). While they are intelligent, human intelligence is unique in many aspects (e.g., complex language, advanced tool - making in a very wide range, etc.). Also, the idea that their brains are similar to the human brain because of the environment is too simplistic. Brain evolution is influenced by multiple factors including genetics, social structure, etc., not just the general environment.

Answer:

Their social relationships contributed toward the size of their brain.