Question 1Navigation General

The correct answer is D) All of the above. A safe water mark can be spherical, show a white light, and/or be vertically striped. These are all acceptable characteristics of a safe water mark, which is a type of buoy or other marker that indicates safe and navigable waters. Safe water marks are used to show the boundary between safe and unsafe waters, and their distinct visual features help mariners identify them as such. The other answer choices are incorrect because they do not encompass the full range of possible characteristics for a safe water mark.