Final answer:
The principle most closely related to 'Preserves sanity of parents' is the Principle of stress management, but the question is more about nurturing a healthy self-concept in children by parenting style. Diana Baumrind's work emphasizes the authoritative style as effective in American society, though styles vary across cultures.
Step-by-step explanation:
In relation to the statement "Preserves sanity of parents," the principle that best relates is likely D) Principle of stress management. However, the context of the question pertains more to what parents can do to nurture a healthy self-concept in their children. Diana Baumrind's research indicates that parenting style plays a crucial role in a child's socioemotional growth. Baumrind identifies four parenting styles: authoritative, authoritarian, permissive, and uninvolved. The authoritative parenting style, which involves reasonable demands, consistent limits, warmth, affection, and listening to the child's perspective, is praised for supporting high self-esteem and social skills in American children. This style emphasizes the balance between setting clear rules and showing empathy, which together contribute to nurturing a healthy self-concept in children.
Importantly, Baumrind also notes that the effectiveness of parenting styles can vary by culture, and what is encouraged in modern American society, like the authoritative style, may not be preferred or appropriate in all cultures. Thus, while stress management is important for parents, nurturing involves tailoring parenting methods – possibly combining various aspects of the different styles – to best support a child's development within their specific cultural context.