Final answer:
Dependence refers to the state of relying on others for support, and the correct option for the student's question is A. it indicates varying level of support required at different life stages.
Step-by-step explanation:
Dependence is the state of relying on others for support. It implies a situation where a person or an entity requires assistance from others to sustain oneself or to function effectively. The correct answer to the question is A. Relying on others for support. This concept is relevant throughout the life course, as individuals may experience varying degrees of dependence at different stages of their lives. For example, newborns are completely dependent on their caregivers, while adults strive for independence but may still need support from friends or community in times of need.