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

Which of the following definitions best describes 'freshwater lake'?

A. A lake which fills a basin that has been dammed by wind-blown sand, formed between sand dunes oriented by winds; or formed by wind action under previously arid paleoenvironments.
B. A lake of whose water contains low concentrations of salts.
C. A lake which has a hypolimnion composed primarily of anoxic water.
D. A lake purposefully constructed.

Answer: A lake of whose water contains low concentrations of salts.