Final answer:
Option c, a group of friends who have known each other for 20 years and socialize daily, is not an example of a secondary group as it represents a primary group with close, emotional connections.
Step-by-step explanation:
The question asks for identification of which option is not an example of a secondary group. A secondary group is large, impersonal, and often task-focused with limited emotional connections, such as a classroom or workplace. On the other hand, a primary group is small, consists of significant others, and fulfills emotional needs, such as a family. Given the choices:
- a: A college lecture course with 300 students.
- b: A planning committee for an office fundraiser.
- c: A group of friends who have known each other for 20 years and who socialize daily.
- d: A crew working on the construction of an office building.
Option c is not an example of a secondary group, as it represents a primary group defined by long-term, face-to-face engagement and emotional connections.