When Amy's infant daughter starts to crawl,she primarily uses her arms to help her.After she masters this new way of moving around the room,she starts relying on her legs to help her more in the crawling process.From a developmental standpoint,the way Amy's daughter starts with her arms and then adds the use of her legs follows the ______ principle.

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The Answer of When Amy's infant daughter starts to crawl,she primarily uses her arms to help her.After she masters this new way of moving around the room,she starts relying on her legs to help her more in the crawling process.From a developmental standpoint,the way Amy's daughter starts with her arms and then adds the use of her legs follows the ______ principle.

When Amy's Infant Daughter Starts to Crawl,she Primarily Uses Her