Which of the following refers to the separation of a person from others against their will?

Involuntary seclusion refers to the separation of an individual from others in a manner that is not voluntary or agreed upon by that individual. This practice is particularly concerning in care settings, as it often violates a person's rights and can lead to feelings of isolation and distress. Involuntary seclusion is considered a form of abuse in many contexts, particularly in long-term care facilities. It involves confining the person to a specific area, such as a room, without their consent and is done without adequate justification. Proper care practices prioritize the dignity and autonomy of individuals, making involuntary seclusion an unacceptable approach.

Other terms, such as passive neglect and active neglect, refer to different types of care issues and do not directly imply physical separation from others. False imprisonment indicates unlawful restraint but does not specifically relate to the act of secluding someone. Hence, involuntary seclusion is the term that best captures the context of separating someone against their will.