Recent ethnographic research reveals that

A) young Yucatec Mayan children decide for themselves how much to sleep and eat, what to wear, when to bathe, and when to start school.
B) Yucatec Mayan children and Western children display impressive similarities in their make-believe play, despite very different cultural and social conditions.
C) in cultures where parents rarely scaffold their children's learning, children tend to be delayed in early cognitive skills.
D) in cultures where parents rarely converse with their children, children tend to frequently display attention-getting behaviors.

A