问题详情

What shall we do according to the conversation？

A．Put our three-year-olds together in day-care centers.

B．Put our 13-year-olds in schools and sports activities.

C．Put our 80-year-olds in senior-citizen homes.

D．Mix people of all ages together.

请帮忙给出正确答案和分析，谢谢！