The first time Dickon leaves the secret garden, he leaves Mary a picture of a missel thrush. What is Dickon's motivation in leaving Mary this picture? A. He wants to remind her to move slowly and softly around the birds and animals in the garden. B. He wants to remind her that her secret is safe with him. C. He wants to remind her that she will be as cozy in the garden as a bird is in its nest. C. He wants to remind her to that he will be at work in the garden before the birds wake up in the morning.