Given the question: I'm taking a test and have to guess the right answer to the question after the article. Article: Thanksgiving Day was near. The first grade teacher gave her class some fun homework---to draw a picture of something for which they were thankful. Most of the class drew a turkey or other traditional things. But Douglas drew a different kind of picture. He drew a hand. Just an empty hand. Douglas was a different boy. He was poor and unhappy. As other children played, Douglas was likely to stand close by the teacher's side. His classmates were surprised at his picture. One child guessed it was the hand of a farmer, because farmers _ turkeys. Others guessed it was the hand of God, for God feeds us. The teacher asked him whose hand it was. The little boy said in a low voice, "It's yours." She remembered the times she had taken his hand and walked with him here and there, as she had the other students. How often she said, "Take my hand, Douglas, we'll go outside." Or, "Let me show you how to hold your pencil." Or, "Let's do this together." Douglas was most thankful for his teacher's hand. Tears came into the teacher's eyes. Question: Douglas drew the picture of a hand because _ . Options: A: the teacher asked the students to draw a hand of the teacher B: most of the class drew traditional things used for celebrating Christmas Day C: Douglas only liked drawing the hand D: Douglas was most thankful for his teacher's hand
The answer is:
D