How many of the 6 to 14-month-old infants tested by Walk and Gibson refused to crawl over the deep side of the visual cliff to their mothers?
A) 25% of them
B) none of them
C) all of them
D) 75% of them

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The Answer of How many of the 6 to 14-month-old infants tested by Walk and Gibson refused to crawl over the deep side of the visual cliff to their mothers?
A) 25% of them
B) none of them
C) all of them
D) 75% of them

How Many of the 6 to 14-Month-Old Infants Tested by Walk