Answer:
1. Proxemics - d. The study of people's use of space as a special elaboration of culture.
2. Threat threshold - b. The hypothetical outer boundary of intimate space; a breach by an uninvited other occasions fight or flight
3. Arousal, relation - a. A heightened state of awareness, orienting response, or mental alertness that stimulates a review of the relationship.
4. Expectancy - c. What people predict will happen, rather than what they desire.
Step-by-step explanation:
An example of proxemics would be how we use space to feel comfortable while sitting or standing next to someone else; we're probably about 12 to 24 feet away from this person (in this case a public speaker, a professor).
Threat threshold may vary on how the person is feeling; if they're feeling good with the violator, then the threat threshold is high; therefore, a close distance is not a problem. But, if the person is not feeling good then the threat threshold is going to be low, making them feel uncomfortable and sensitive with a close distance with the violator.
Arousal happens when we're fully aware of stimuli; now regarding relationships, arousal makes us aware of the stimuli that relate us with other people.
Expectancy is a prediction on what will happen, but this needs to be related to previous actions that help us draw a result based on a behavior.