2.3 [38]. The care-giving strategy in Kung San is similar to that in the United States in terms of the effect on___

[单选题]
2.3
[38]. The care-giving strategy in Kung San is similar to that in the United States in terms of the effect on____.(1分)

AA) the frequency of contact between the mother and the infant(B) the frequency of nursing(C) the quickness of the mother's response to the infant's cry(D) the number of individual crying episodes

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