When ron complained to his bank about the unprofessional behavior of one teller, the branch manager added a code into his accounts alerting all tellers that ron was a valued customer and to provide whatever service he requests. the branch management included ron in its segmentation.

loyalty

Explanation:

Based on the information provided within the question it seems that the branch manager included Ron in its loyalty segmentation. This refers to when a company divides it's clients based on how the interact with the product or service that the company is providing. In this scenario it is most likely that Ron was added to a list of people that are likely to complain and cause a scene, therefore the employees were alerted to provide whatever he requested.

they protect against unsafe foods and medicines being sold

explanation: