Final answer:
A 12-year-old child should get 9 to 12 hours of sleep each night to support their development and well-being.
Step-by-step explanation:
For a 12-year-old child, the amount of recommended sleep each night falls between 9 to 12 hours according to the consensus from sleep researchers and pediatric organizations. It is crucial for children in this age group to have adequate sleep since it significantly impacts their mental and physical development, including aspects like cognitive performance, growth, immune function, and emotional regulation. A balance between restful sleep and activity is essential for the overall well-being of the child.