Answer:
Explanation:
A. Generally because those types of people either cannot swim or prefer to lay back and relax
B. To float, the weight and density of the ship must be equal to or greater than the displacement of the water. If you throw a rock into the water, why does it sink? Because its density is greater than the amount of water displaced when it comes into contact with water.
C. Materials have varying density and weight, some are light and some are heavy. these factors can affect whether or not a material can float or sink.