Task: Instance Description Understanding (ontology: Sciences/Computer_Science)

Which of the following definitions best describes the instance 'hertz'?

A. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor is more than 4 cm but not more than 7 cm.
B. AL 2023-03-05: Improperly created IRI (with 'efo' in the IRI) replaced by the correct form for SWO IRIs.
C. A pathologic primary tumor stage for ovary according to AJCC 7th edition indicating that the tumor involves one or both ovaries with pelvic extension.
D. A frequency unit which is equal to 1 complete cycle of a recurring phenomenon in 1 second.

Answer: A frequency unit which is equal to 1 complete cycle of a recurring phenomenon in 1 second.