Task: Inferred Class Relation Reasoning (ontology: Human_Society/EmotionOntology)

After reasoning, which of the following classes is one valid superclass of 'multi-organism reproductive behavior'?

A. appraisal as unavoidable consequences
B. circadian regulation of heart rate
C. occurrent
D. envenomation resulting in modulation of complement activation, alternative pathway in other organism

Answer: occurrent