What is the indication of the brain development according to Genie's story? A. Adult brains learn more than children's brains. B. There are critical periods for a child's brain development. C. People of any age can learn to speak effectively. S. Nurturing makes little difference in development.

I think the correct answer from the choices listed above is option B. The indication of the brain development according to Genie's story is that there are critical periods for a child’s brain development. In this critical period, the child should be exposed well to experiences that he should undergo in order to learn well.