Which of the following formulas is an acceptable method to calculate the vertical shift of the vessel's center of gravity?

Correct Answer: Option C — GG'= (WxD)/Displacement

The formula GG' = (w * d) / W represents the vertical shift of the center of gravity, where 'w' is the weight moved or added, 'd' is the distance between the old and new positions of the weight, and 'W' is the final displacement of the vessel.