单选题:根据皮亚杰的认知发展分期论,婴儿绕行茶几以取它后面的玩具,不再仅从茶几下爬过。这时的婴儿处于(  )

题目内容:
根据皮亚杰的认知发展分期论,婴儿绕行茶几以取它后面的玩具,不再仅从茶几下爬过。这时的婴儿处于(  ) A.感觉运动阶段
B.思维准备阶段
C.思维阶段
D.抽象思维阶段

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