问题详情

This passage is mainly about ______.
A．how some mothers on the farm worry about the children"s education
B．how some children help their mother to do the chores on a farm
C．how some thin children are forced to work in the field
D．how Gugu and Zandi make a visit to their friend"s family请帮忙给出正确答案和分析，谢谢！