Answer:
informal group
Explanation:
Tammy, Lisa, Bart, Madaline, and Roberto all work at Frink Electronics. After work, Tammy, Lisa, and Madaline all enjoy going to the Lux Lounge for Happy Hour. Tammy, Lisa, and Madaline constitute a formal group. An informal group is a group that is formed by employees based on their mutual likes and dislikes unlike formal groups which are created as per official authority, so as to fulfill the desired objective.
Tammy, Lisa, and Madaline eating at Lux lounge is because they like the place and not based on employer authority, they are not structured by the organization and are meeting for social contact and hence constitute an informal group..
