This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pre Anesthetic Evaluation, Subject name: Anaesthesia
Mallampati score is used in: 
Select and explain. 
A. Thoracoabdominal angular curvature during respiration, B. Flexion and extension of neck during intubation, C. Free rotation, D. To assess difficulty in intubation in oral cavity
D: To assess difficulty in intubation in oral cavity
Answer: D: To assess difficulty in intubation in oral cavity 
Explanation: Mallampati score is used to predict difficult tracheal intubation based on the size of tongue base relative to the oropharyngeal space. Mallampati classification: Class I: soft palate, fauces,entireuvula, pillars Class II: soft palate, fauces,poionof uvula Class III: soft palate, base of uvula Class IV: hard palate only