Anatomy Wolff’s law is:- A Epiphyseal centre which appears first unites last with diaphysis B Epiphyseal centre which appears first unites first with diaphysis. C Osteogenesis is directly propoional to stress and strain. D None of above. 💡 Explanation Wolff's law is:- ✓ Correct Answer: C. Osteogenesis is directly propoional to stress and strain.