Answer:
b. state of awareness
Explanation:
State of awareness: In psychology, the term state of awareness is defined as the capability of an individual to feel, perceive, and know directly about events. It refers to an individual's state of being conscious regarding something. It is denoted with the consciousness of an individual related to his or her thoughts, sensations, environment, feelings, etc. An individual who requires to experience a state of awareness he or she should be aware as well as awake.
In the question above, the different mental states of Sergio and Giuseppe is explained through a state of awareness.