单选题
[填句补文]Home schooling is often more interesting than regular schools， but critics say that home-schoolers are outsiders who might be uncomfortable mixing with other people in adult life. ________. However， most parents don't have the time or the desire to teach their children at home， so schools will continue to be where most children get their formal education.
A.Critics also say that most parents are not well qualified to teach their children.
B.A number of parents prefer not to send their children to school.
C.Children who are educated at home are known as “home-schoolers.”
D.Others believe they can provide a better educational experience for their children by teaching them at home.
正确答案：A
答案解析：本段大意是“对 home schooling 提出了质疑”，需要注意前面说到了“critics say”，空格处与之对应的是“Critics also say”。