If an Infant Is Held Upright and Then Quickly Moved

If an infant is held upright and then quickly moved forward, as if he or she were falling, the child will reflexively put his or her arms out. This behavior appears long before children learn to walk. Because this instinctive behavior would help cushion the child if he or she really fell, we can say that it has

A) the function of a tabula rasa.
B) ethology.
C) adaptive significance.
D) spontaneous recovery.