I would say C or D
Hope This Helps
The central portion of Earth is called the CORE
Parents have many responsibilities to their children, these responsibility must be taken seriously in order to keep the children in the right path. The parental responsibility that I will personally found very interesting is teaching my children how to do different stuffs. Like teaching them cook different dishes and cookies or teaching them to play different games or teaching them funny tricks in mathematics.
Easy. HISTORY or GEOGRAPHY books of specific areas you want to know more about.