Any boat will sink if it displaces water equal to its weight (option B). This is according to Archimedes’ principle, which states that the buoyant force acting on an object immersed in a fluid is equal to the weight of the fluid displaced by the object. If the boat displaces water equal to its weight, there will be no net upward force to counteract its weight, causing it to sink. Therefore, the critical factor determining whether a boat will sink is the amount of water it displaces compared to its weight. If the displaced water is less than its weight, the boat will sink; if it is greater, the boat will float. Surface area and density are not directly related to a boat’s sinking or floating ability.