Who does the term "custodian" refer to?

The term "custodian" typically refers to a person who has custody of a child, which aligns directly with the definition of someone with whom a child resides. In legal contexts, custody can imply that this individual has the right and responsibility to care for the child, make decisions regarding their welfare, and ensure their living conditions are safe and supportive.

The other roles mentioned, while significant in their own right, do not specifically embody the primary responsibility of ongoing care and residence that a custodian implies. A legal guardian may have similar responsibilities, but they are often appointed by a court and may not necessarily live with the child. A social worker or teacher typically has professional responsibilities towards the child but does not hold custodial duties. This specificity makes the association of "custodian" with a person with whom a child resides the most accurate choice.