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

Which of the following definitions best describes 'fossil worm burrow'?

A. An underground or underwater passage.
B. A channel which was formed as a result of an annelid burrowing through soil, where organic residues lining the burrow have subsequently initiated fossilization.
C. A channel through which brine flows.
D. A channel which is constructed by removing materials from land or submerged beds.

Answer: A channel which was formed as a result of an annelid burrowing through soil, where organic residues lining the burrow have subsequently initiated fossilization.