Answer: B). "I close one nostril while I breathe in and squeeze the spray into the other."
Step-by-step explanation:
The following steps are required to safely and correctly administer a nasal decongestant spray;
1). Wash hands throughly with soap and water.
2). Blow out your nose gently before administering the medication.
3). Keep your head upright whilst breathing in quickly, gently close one nostril whilst squeezing the spray into the other.
4).Repeat the steps (2-3) for the other nostrils.
5). Try not to blow out your nose or sneeze just after the administration of the medication.
6). Wash hands thoroughly with soap and water after using the spray.