Final answer:
The correct option is 2). Nancy leaving the store without buying the sprinkler system due to inadequate service from the salesperson is an example of situational influence, which refers to the effect of time and place on a consumer's behavior.
Step-by-step explanation:
Nancy's experience at the home store, where she felt the salesperson did not give her proper attention and did not answer her questions satisfactorily, is an example of a situational influence altering a consumer's perception of value. Situational influences encompass all those factors particular to a time and place of observation that do not follow from a knowledge of personal (intra-individual) and stimulus (choice alternative) attributes and have an effect on current behavior. In this case, the poor service altered Nancy's perception of value, leading her to decide against purchasing the sprinkler system despite her initial intention.
Every purchase is based on a belief about the satisfaction that the good or service will provide. Therefore, when the information available to the buyer or the seller is imperfect or unclear, as in the way the salesperson communicated with Nancy, this can make buyers avoid making future purchases or regret past ones due to unforeseen shortcomings in the good or service.