Final answer:
A client with chronic obstructive pulmonary disease who requires low flow oxygen can be administered oxygen using a nasal cannula because it is comfortable and effective.
Step-by-step explanation:
A client with chronic obstructive pulmonary disease who requires low flow oxygen can be administered oxygen using a nasal cannula.
A nasal cannula is a device that consists of two small tubes that are placed in the patient's nostrils, delivering a low flow of oxygen directly into the nose.
It is a common and comfortable method of oxygen delivery for patients with COPD.