The best answer is:
D No, because the information is off-topic and tends to blur the focus of the paragraph.
The paragraph is primarily discussing the history and context of Kraft macaroni and cheese, particularly during the Great Depression, and how it served as a convenient and inexpensive meal option. The statement about milk and cheese containing calcium, while true, does not directly relate to the main focus of the paragraph regarding historical context and the product's functionality. Adding it could distract from the overall message about the significance of Kraft macaroni and cheese during that era.