What is a continent defined as?

A continent is defined as a large continuous mass of land. This definition emphasizes the physical geography of a continent, which is characterized by vast areas that are typically distinguished from other landforms by their size and topographical features. Continents usually encompass diverse ecosystems, climates, and a range of geographical landscapes, making them significant for studying both natural environments and human activities.

The other choices do not adequately capture the essence of what defines a continent. A small landmass surrounded by water refers more to islands, while a region with distinct cultural characteristics describes a sociocultural concept rather than a geographical one. Lastly, a body of water bordered by land describes features like lakes or seas, which are not landmasses at all.