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

Which of the following definitions best describes 'perennial snow patch'?

A. A snow patch which forms during a cold season and melts away during the succeeding warm season.
B. A room which is used for patient care during a patient's visit or stay in a healthcare facility.
C. An the concept is a building roof that is built from asbestos.
D. A snow patch which persists through at least one seasonal cycle.

Answer: A snow patch which persists through at least one seasonal cycle.