Final answer:
The best action is to clarify the method of delivery for the lidocaine with the prescribing physician, as the delivery method is crucial for the safety and effectiveness of the procedure.
Step-by-step explanation:
If you are instructed to give 5 mls of lidocaine 30 minutes prior to a bronchoscopy, the best answer would be option C) clarify method of delivery. Lidocaine can be administered through various routes during medical procedures, and the method of delivery should be explicitly specified by the prescribing physician based on the case specifics. Nebulizing lidocaine may be appropriate for some respiratory procedures, while direct instillation may be used in others. However, because the method of delivery can significantly affect the outcome and safety of the procedure, clarification with the medical team is essential.