Task: Property Constraint Reasoning (ontology: Earth_Environment/SWEET)

The property 'has wavelength' applies to instances of 'wave', and 'acoustic wave' is a subclass of 'wave'. Which class can appear as the value of 'has wavelength' for instances of 'acoustic wave'?

A. condensation level
B. bias
C. demersal zone
D. wavelength

Answer: wavelength