Which practice includes bathing, hair and nail care, and oral hygiene?

The practice that encompasses bathing, hair and nail care, and oral hygiene is personal hygiene. This term refers to the daily practices that individuals engage in to maintain cleanliness and overall health. Personal hygiene plays a crucial role in preventing the spread of infections and maintaining personal health. It focuses specifically on cleanliness and hygiene-related activities that are essential for preventing illness and promoting well-being.

While personal grooming does include some aspects of hair and nail care, it typically emphasizes appearance and style rather than the health-related aspects associated with hygiene. Personal sanitation generally pertains to the broader concepts of clean living environments, while personal care can refer to a wide array of services or practices related to health and beauty, but it might not specifically focus on hygiene practices. Therefore, personal hygiene is the most comprehensive and accurate term for the activities described in the question.