Social & Preventive Medicine Randomization: A It brings bias in study group, therefore avoided B It is the Procedure by which participants are allocated into groups usually called study' and control' group C It ensures that investigator has full control over allocation of participants to study or control group D It is done usually before entering in the study and then consent is taken 💡 Explanation Randomization: ✓ Correct Answer: B. It is the Procedure by which participants are allocated into groups usually called study' and control' group