A Salesforce associate is asked to share records about a carpool program with users.

 The type of group that the associate should create to share records about a carpool program with users is a public group. A public group is a set of users that can be used to define sharing rules, queues, and other features that require a group of users. A public group can include individual users, other groups, roles, or territories. A public group can be used to share records with a specific group of users who are interested in the carpool program. A private group is a type of Chatter group that is not related to record sharing. A queue is a feature that allows users to manage leads, cases, and other objects as a team, but it is not suitable for sharing records about a carpool program.