<prompt> Flexible Bronchoscope contains holes for all of these functions EXCEPT?VentilationDrainage of secretionFor biopsyTo remove foreign body  <response>: Ans. d To remove foreign bodyRef.: Harrison 19th ed. 1667Foreign body is removed by rigid bronchoscopy.Indications for Rigid Bronchoscopy Bleeding or hemorrhage Foreign body extraction Deeper biopsy specimen when Fiber-optic specimen is inadequate Dilation of tracheal or bronchial strictures, relief of airway obstruction, insertion of stents, and pediatric bronchoscopy. It is also used for tracheobronchial laser therapy or other mechanical tumor ablation. 