Final answer:
None of the options provided represent a number line. A proper number line plot for the integers -12, -3, and 7 would visually depict these points on a line, which is not reflected in the answer choices.
Step-by-step explanation:
The student's question requires plotting the integers -12, -3, and 7 on a number line. Given the choices provided, none of them are actual number lines, but rather they seem to be single numbers or incomplete parts of possible answers. To address the question properly, one would need to see the actual number lines that correspond with each letter choice. However, the correct number line should be a visual representation that allows us to mark the positions of -12, -3, and 7. No actual plot is provided in the choices, so the question cannot be answered as it stands.