Final answer:
The business structure that is composed entirely of work groups and teams is known as the team-based structure, which is aligned with contemporary organization trends favoring collaboration and flexibility over traditional hierarchies.
Step-by-step explanation:
The business structure that consists entirely of work groups and teams which perform an organization's work is the d. team-based structure. In this model, organizations rely on teams to accomplish specific tasks. Utilizing a team-based approach can potentially harness diverse skills, experiences, and expertise, leading to innovative solutions and efficient problem-solving. It aligns with the evolving nature of work environments that increasingly favor collaborative and dynamic structures over traditional hierarchical models.