The answer is both c and d but in your case c
Answer: Co-actor
Explanation:
Co-actor, in terms of social facilitation is the person who performs the same activity or action along with the performer.This mechanism is not performed in competitive manner.Performers tends to improve his performance while in presence of audience and co-actor.
According to the question,the guy is known as co-actor in terms of social facilitation as he is performing the same act of sitting along with the person.Thus,this impacts behavior of person as a performer.
Personality psychology<span> is a branch of </span>psychology<span> that studies </span>personality<span> and its variation among individuals. Its areas of focus include: construction of a coherent picture of the individual and their major psychological processes. investigation of individual psychological differences.</span>Personality psychologists are concerned with personality and its variation among individuals <span>in a given situation.</span>