The word that is different from the rest is C: River. Here's a detailed explanation:
1. Lake:
- A lake is a large body of water surrounded by land.
- It is usually freshwater and can be either natural or man-made.
- Lakes are often formed by glaciers, tectonic activity, or volcanic eruptions.
2. Sea:
- A sea is a large saltwater body that is partially enclosed by land.
- Seas are connected to the ocean and are usually partially enclosed by land masses.
- Examples of seas include the Mediterranean Sea, the Red Sea, and the Caribbean Sea.
3. River:
- A river is a large natural flowing watercourse.
- Rivers are typically freshwater and flow towards an ocean, sea, lake, or another river.
- They are formed by the accumulation of water from various sources, such as rainfall, melting snow, or underground springs.
4. Pool:
- A pool is a small body of water, often man-made.
- Pools are usually shallow and can be found in residential areas, hotels, or recreational facilities.
- They are used for swimming, relaxation, or water activities.
Summary:
In summary, while lakes, seas, and pools are bodies of water, rivers are flowing watercourses. Therefore, the word that is different from the rest is "C: River".