Answer: Retrieval
Step-by-step explanation:
Retrieval set is defined as the collection of stores, products or brands that can be brought in-front while recalling process takes place in mind of a person. This set occurs from memory storage of mind because of category priority among the other stored stores.
According to the question, Amber is remembering the restaurants for having lunch by opting appropriate close outlet of the five restaurants stored in her mind. This scenario displays that she is using retrieval set.