Final answer:
The components mentioned by the student are b. unobservable components of culture, which form the underlying values, beliefs, and norms influencing behavior and interactions within a society.
Step-by-step explanation:
The components of culture such as expectations, relationships, beliefs, body language, and roles that the student has mentioned are all examples of unobservable components of culture. These are the elements that shape how a culture is experienced and understood by its members, although they may not always be directly visible or tangible. This aligns with the studies in sociology and anthropology where emphasis is placed on the underlying values, beliefs, and norms that influence behavior and social interactions within a society or an organization.