In a recent study, a group of young children were taught the word "stairs" while walking up and down a flight of stairs. Later that day, when the children were shown a video of a person climbing a ladder, they all called the ladder stairs.
Which one of the following principles is best illustrated by the study described above?
(A) When young children repeatedly hear a word without seeing the object denoted by the word, they sometimes apply the word to objects not denoted by the word.
(B) Young children best learn words when they are shown how the object denoted by the word is used.
(C) The earlier in life a child encounters and uses an object, the easier it is for that child to learn how not to misuse the word denoting that object.
(D) Young children who learn a word by observing how the object denoted by that word is used sometimes apply that word to a different object that is similarly used.
(E) Young children best learn the names of objects when the objects are present at the time the children learn the words and when no other objects are simultaneously present.