Support for the Idea of the "Sociostat" (Social Thermostat) Is

Multiple Choice

Support for the idea of the "sociostat" (social thermostat) is provided by the finding that rats

A) tend to prefer to remain on their own once a period of isolation ends.
B) are less likely to approach other rats after a period of prolonged contact.
C) aggress against other rats when a shared resource is scarce.
D) always prefer the company of other rats to being alone.