What is the main idea of this text?

Question

A. Scientists are beginning to interpret the ways that whales communicate, and by doing
so they're learning more about whales' intelligence and social traits.
B. Whales "sing" by moving inhaled air around the nasal cavity in front of their blowholes, which is different from how humans communicate on land.
C. Humpback whales are a special type of whale because they make a wide variety of noises, including growls, trumpets, and ahoogas.
D. Michelle Fournet is an important whale researcher because she and her team tracked whale recordings for 38 years.

Answer 1

A. Scientists are beginning to interpret the ways that whales communicate, and by doing so they're learning more about whales' intelligence and social traits.