One of the nine-month old babies in your infant program has always transitioned easily inthe morning. You can tell from several clues that he has recently achieved object permanence. He begins to fuss and cry at separation from his parents in the morning, and they are alarmed at what they see as evidence he is no longer happy in your program. Youare convinced his recent "clinginess" is related to his development. How do you explain this to the infant's parents