Answer: Every morning, Kelly goes for a walk in a park near her apartment. She is acquainted with some of the regular walkers in the park. She greets them whenever they meet and sometimes goes for breakfast with them to a nearby diner. This group is an example of an (A) informal group.
Step-by-step explanation: An informal group is a group conformed by individuals who see each other regularly either because they live nearby or because they work in the same place. Moreover, an informal group is a group formed by people who enjoy interacting with each other and do not share a common goal. Taking this into account, it can be said that the group provided is an example of an informal group since its members spend time together because they want to and not because they must do it to achieve a purpose. In other words, it is an informal group because the members simply enjoy each other's company.