Final answer:
Making a sandwich conserves matter as it simply rearranges existing ingredients into a new form, aligning with the law of conservation of matter.
Step-by-step explanation:
When making a sandwich, you aren't creating or destroying matter, but rather, you are rearranging it. According to the law of conservation of matter, the amount of matter remains constant in a closed system. Therefore, when you combine bread, meat, cheese, and other ingredients to make a sandwich, you're simply compiling existing matter into a new form.
The correct answer to the question of how making a sandwich relates to the conservation of matter is: c) Making a sandwich conserves matter.