Nowadays sending children to boarding school is becoming increasingly popular. What are the reasons? Do you think it is a positive development or a negative development?

B1 原因类我想的是家长太忙，工作赚钱，没有时间养孩子，那根本原因可能是社会竞争激烈。不知道有没有哪个逻辑链可以套用呢？
B2 是一个好的发展。（这里要不要先承认也有不好的方面？）
difference - creative
difference - social skill