Task: Class Definition Understanding (ontology: Earth_Environment/EnvironmentOntology)

Which of the following definitions best describes 'backwater'?

A. Artificial watercourse with no flow or a controlled flow used for navigation, drainage or irrigation.
B. An area of calm water unaffected by the current of a stream.
C. A watercourse which has the intensity and direction of its flow primarily determined by the tides.
D. The exit or point of discharge of a stream into another stream, lake or sea.

Answer: An area of calm water unaffected by the current of a stream.