The correct answer is True because hydrography is the study and mapping of the Earth's bodies of water, including oceans, rivers, lakes, and other water bodies. It involves measuring and describing the physical characteristics of these water bodies, such as their depth, flow, and temperature. Hydrography plays a crucial role in various fields, including navigation, engineering, and environmental management, as it helps in understanding and managing water resources effectively. Therefore, it can be said that hydrography encompasses all the waters of the Earth.