The correct answer is A) Area of water line near stem and stern. The draft marks are required to be displayed in the area of the water line near the stem and stern of the vessel. This allows the vessel's draft to be easily measured and monitored, which is essential for safe navigation and compliance with regulations. The draft marks indicate the depth of the vessel in the water, which is crucial information for navigating in shallow or restricted waterways. The other answer choices are incorrect because voids and deep tanks are internal compartments of the vessel and do not display the draft marks, and midships near the waterline is not the required location for the draft marks.