The correct answer is C) overloading. Under the Carriage of Goods by Sea Act (COGSA) of 1936, a vessel will be liable for damage to cargo when the damage arises out of overloading the vessel. The act specifically exempts the carrier from liability for damage caused by "Act of God" events like lightning strikes (option A) or inherent vice of the cargo (option B). However, the carrier is responsible for properly stowing and securing the cargo (option D), and overloading the vessel beyond its safe capacity would be considered negligence on the part of the carrier, making them liable for any resulting cargo damage.