What determines whether water is considered "shallow"?

Water is generally considered "shallow" based on a person's height. This is because the classification of water depth often relates directly to how deep the water is in relation to the average person's standing height. Shallow water is typically defined as water that is at or below a certain level, usually around the knee height of an average adult, making it suitable for wading and other activities where one does not intend to be fully submerged.

The other choices do not have a direct impact on the definition of shallow water. The angle of the bottom can affect how quickly the water depth changes, but it doesn't define whether the water is shallow or deep. A person's weight does not influence water depth at all, nor does it play a role in determining if water is shallow. Water temperature is unrelated to depth categorization, as it pertains to the physical state of the water rather than its height.