Answer: This people are in Daniels "INTIMATE SPACE".
Explanation: Intimate space are the reserved space our body needs that ranges from the point of the body to an arms length of another body. It is a space that is normally 18 inch distance the body gives to another body. In nonverbal communication, intimate space can be expressed by touching, body movement and body contact, and voice.
According to proxemics, which is the study of human use of space, and the effects it has on humans. Their states that people feels uncomfortable when their intimate space has been occupied by strangers. This space is meant for family members, lovers and close friends.
Going by the proxemics research on intimate space, Daniel felt uncomfortable because the people where in his intimate space.
A. lack of exercise it makes the most sense
According to Adam Smith, the self-interest represents the personal gain of the individual and actions he takes in order accomplish that self interest. He was a staunch believer in the free market and was against government regulations because he thought that the free market would most benefit the individual and therefore the society. The competition is what makes the the manufacturers produce better products and more of them, while this will spur the costumers to buy those products. When many act in their own self interest, the market will give both to the manufacturers and the consumers.