When providing instruction to the parents or a child about using a metered-dose inhaler (MDI), Determine which instruction would help to ensure that the patient achieves maximum therapeutic delivery of the medication. a. Make sure to report any adverse effects after using your inhaler. b. Prime the inhaler if it is new or has not been used for several days. c. Hold your breath for 60 seconds after the medication is delivered. d. Use the inhaler while sitting up in a chair at 90-degree angle.