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

After reasoning, which of the following classes is one valid superclass of 'envenomation resulting in zymogen activation in other organism'?

A. envenomation resulting in positive regulation of signal transduction in other organism
B. occurrent
C. communication
D. appraisal of expectedness

Answer: occurrent