Fletcher and her colleagues conducted a study with Mexican-American mothers and toddlers. They observed mothers and toddlers playing with a standard set of toys. One important conclusion from this study was that  单项选择题

A

toddlers and mothers coordinate functional, but not symbolic, play.

B

play with others is critical for toddlers' cognitive development.

C

mothers' response to their toddlers' play reflects a sensitivity to their child's motor development.

D

mothers' and toddlers' play is related in meaningful ways.

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