Dental According to Mahler’s theory, period of normal symbiotic phase is: A 0 - 1 year B 4 weeks to 4 years C 8 weeks to 8 years D 5 to 36 months 💡 Explanation According to Mahler's theory, period of normal symbiotic phase is: ✓ Correct Answer: B. 4 weeks to 4 years