Which of the following must be true for an individual's behavior to be considered a communication signal?
A) It must benefit the sender.
B) It must be visual.
C) It must benefit the receiver.
D) Both a and b
E) Both a and c

Question

Quizplus · Accepted Answer

For behavior to be considered a communication signal, it must benefit either the sender (for example, by receiving food or mating opportunities) or the receiver (for example, by receiving a warning of danger or finding a potential mate). Therefore, option A and option C are both necessary. Whether the signal is visual or not is not a requirement for communication signals, so option B is incorrect.

Which of the Following Must Be True for an Individual's