Wired To Be Nice. (1)An alien race tracking our TV broadcasts from outer space might conclude that Planet Earth is a great place to visit, but they wouldn't want to live here.

The author's main purpose in this selection was to

A. compare people who cooperate with those who don't.

B. tell an entertaining story about an experimental game.

C. give information about an experiment on cooperation.

D. explain how to carry out a scientific experiment.