【单选题】

In this section you will hear everything ONCE、ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your answer sheet.

According toDr. Neil, what is the most noticeable effect of smaller families
[A] There is less mixing of ages in smaller families.
[B]Children can get more affection from their parents,
[C]Children can live in a more loving environment.
[D]Children are able to enjoy better living condition.