Explanation: In geography, landforms are natural features of the Earth's surface. One such landform is an island, which is defined as a piece of land that is completely surrounded by water. This definition is crucial to understanding the nature of an island.
An island can vary in size, from tiny islets to large landmasses like Greenland. Islands can be formed through various geological processes, such as volcanic activity, sedimentation, or the submergence of a landmass due to rising sea levels. They are distinct from other landforms like peninsulas, which are also surrounded by water but are connected to a larger landmass.
A peninsula, for example, is a piece of land that extends into a body of water and is connected to the mainland. The Arabian Peninsula and the Iberian Peninsula are well-known examples. Peninsulas are not completely surrounded by water, which is a key difference from islands.
A plateau, on the other hand, is a flat-topped elevated area, often with steep sides. It is not surrounded by water and is typically part of a larger landmass. Examples of plateaus include the Tibetan Plateau and the Colorado Plateau.
The term "waterland" is not a standard geographical term and does not describe a specific landform. It is not recognized in geographical studies and does not fit the description of a landform that is completely surrounded by water.
In summary, the correct answer is "Island" because it is the only option that accurately describes a piece of land completely surrounded by water. Understanding the definitions and characteristics of different landforms is essential for correctly identifying and distinguishing between them in geographical studies.