单选题：根据材料请回答Early or Later Day CareThe British psychoanalyst John

根据材料请回答Early or Later Day Care
The British psychoanalyst John Bowlby maintains that separation from the parents during the sensitive "attachment" period from birth to three may scar a child's personality and predispose to(预先安排的)emotional problems in later life.Some people have drawn the conclusion from Bowlby' s work that children should not be subjected to day care be fore the age of three.But there are also arguments against such a strong conclusion.
Firstly, anthropologists point out that the insulated love affair between children and parents found in modern societies does not usually exist in traditional societies.For exam-ple, in some tribal societies, such as the Ngoni, the father and mother of a child did not rear their infant alone.Secondly, common sense tells us that day care would not be so widespread today if parents and care-takers found children had problems with it.Statistical studies of this kind have not yet been carried out, but many people have uniformly repor- ted that day care had a neutral or slightly positive effect on children's development.But tests that have had to be used to measure this development are not widely enough accepted to settle the issue.
But Bowlby's analysis proves that early day care has delayed effects.Early day care.might lead to, say, more mental illness or crime 15 or 20 years later.Whatever the long-term effects, parents sometimes find the effects difficult to deal with.Children under three are likely to protest at leaving their parents and show unhappiness.At the age of three or three and a half almost all children find the transition to nursery easy, and this is undoubt-edly why more and more parents make use of child care at this time.Which of the following statements would Bowlby support? A．Statistical studies should be carried out to assess the positive effect of day care for children at the age of three or olde
B．Early day care can delay the occurrence of mental illness in childre
C．The first three years of one's life is extremely important to the later development of personalit
D．Children under three get used to the life at nursery schools more readily than chil-dren over thre