What Did Dorothy Cheney and Robert Seyfarth Discover About the Communicative

Multiple Choice

What did Dorothy Cheney and Robert Seyfarth discover about the communicative capabilities of vervet monkeys?

A) They modified their calls based on what their audience knew.
B) They did not modify their calls based on what their audience knew.
C) They did not change their rate of alarms whether they were with their own offspring or with monkeys unrelated to them.
D) They could not make calls to signal the presence of different dangers.