Pathology What is the pH at which initiation of caries begins? A 4.3 - 4.5 B 5.2 - 5.5 C 4.9 - 5.1 D 3.5 - 4. 5 💡 Explanation What is the pH at which initiation of caries begins? ✓ Correct Answer: B. 5.2 - 5.5