Task: Inferred Class Relation Reasoning (ontology: Sciences/Biology)

After reasoning, which of the following classes is one valid superclass of 'positive regulation of myoblast fusion'?

A. regulation of wound healing, spreading of epidermal cells
B. positive regulation of developmental process
C. mitochondrial DNA replication
D. inositol-1,3,4-trisphosphate 1-phosphatase activity

Answer: positive regulation of developmental process