Final answer:
Jason's expectation of Greg saying hi in return pertains to 'scripts,' which are expectations of social behavior learned from cultural norms and likely interactions in specific settings.
Step-by-step explanation:
Jason's expectation that Greg would say hello in return refers to b. scripts. A script is a person's knowledge about the sequence of events expected in a specific setting. This expectation is based on learned social behaviors and the cultural norms associated with interacting in the residence hall lobby. When we meet someone, we generally anticipate a greeting in response, as it's part of the social script we have internalized on how to behave in such scenarios. For instance, in the context of the same residence hall lobby, we would not expect someone to perform a dance as a response to a greeting because it falls outside the typical script for that setting.
Social scripts are quite important as they help guide appropriate behavior in given situations. When someone does not follow these scripts, it might lead to confusion or discomfort, highlighting the pervasiveness of these scripts in everyday interactions. Jason's reaction to Greg's non-response is a result of Greg not adhering to the conventional social script of exchanging greetings when they pass by each other in the hall.