听力原文：W: Nine out of ten parents smack their children according to a report published today. What is your opinion about this report？
M: Well, although nine out of ten parents use smacking as a punishment, half of them feel guilty about using it. The other half do smack their children and think they are right. It seems most parents we talked to smack their children more than once a week and 5% actually smack their children every day.
W: The report suggests that parents should make more efforts to understand their children and that smacking isn't always the best solution if children are naughty.
M: Yes, parents should try harder to understand how their children feel when they react in certain ways. For example they might be jealous of a new baby brother or a sister or they might feel insecure. Any number of things might make the child react badly.
W: So in those kinds of situations it would be better not to smack children？
M: Yes, obviously because when a child's behaving badly, it needs love and attention, not anger and violence. I think parents should think really carefully before they smack their children.
W: Maybe parents should find an opportunity to communicate with their children.
M: That's right.
(23)

A. Five out of nine.
B. Nine out of ten.
C. One out of ten.
D. Five out of eight.