How is "social isolation" defined?

Social isolation is defined as being cut off from social interactions, which captures the essence of the phenomenon. This definition highlights the state of an individual who experiences a significant lack of meaningful connections or social engagements with others, leading to feelings of loneliness and disconnection from society. Social isolation can occur for various reasons, including geographical separation, health issues, or social circumstances, and it can have profound effects on an individual's mental and physical well-being.

The other options touch on related concepts but do not accurately define social isolation itself. A lack of economic resources pertains to material deprivation rather than social connectivity. An individual's failure to conform relates to the idea of social norms and expectations but does not necessarily imply isolation from social interactions. Similarly, engagement in solitary activities can occur without implying social isolation; individuals may choose to engage in solitary hobbies while still maintaining social ties. Thus, being cut off from social interactions succinctly encapsulates the core of social isolation.