Final answer:
b) Removing
In healthcare, suction should be applied while removing the catheter to effectively remove secretions and minimize risks.
Step-by-step explanation:
The question relates to the appropriate technique for suctioning a patient, which is a crucial skill in healthcare practices. When performing suctioning, it's important to follow the correct procedure to maintain patient safety and effectiveness of the procedure. The suction should be applied while removing the catheter, not while inserting it. This is because the goal is to remove secretions as the catheter is withdrawn, minimizing the risk of pushing the secretions further into the airway.