<span>At Cornell university, Gibson and walk placed infants on the edge of a safe canyon to determine whether crawling infants and newborn animals can perceive depth. this famous experiment is known as the visual cliff. The </span>psychologists Eleanor J. Gibson and Richard D created apparatus <span>to investigate depth perception.</span>
Answer:
Their parents might not think their child is capable of doing such things, and the reason why might also be because they are "too busy".
The parents might also have drug problems of their own
The correct answer is the Temperance Movement.
The Temperance Movement was a movement of primarily protestant white Americans who were worried about the influx of immigrants into the country. One of their biggest fears was that the drinking of the Irish and Germans would erode the Protestant values of the USA.
C maybe i'm really not sure sorry :)
