Answer: D. theory of mind
The theory of the mind is the ability to understand other people simply by attributing mental states to them. These mental states can be beliefs, intentions, and desires. Understanding that the beliefs of others are different from our own is just what the theory of the mind entails. Theory of the mind is generally considered a skill and it develops in children between the age of 3 and 5. This “skill” takes a process and does not happen overnight.