Final answer:
The Yankauer suction tip is the correct device for suctioning the oropharynx, which is option number 4.
Step-by-step explanation:
The device used for suctioning the oropharynx is the Yankauer suction tip. This is option number 4 on the list provided. The Yankauer tip is a commonly used medical tool designed for oral suctioning. It helps clear the oropharynx of saliva, blood, vomit, or other secretions so that a patient can breathe more easily. The rigid, curved design allows for easy suctioning while preventing damage to the surrounding tissues. Options 1) Ophthalmoscope, 2) Stethoscope, and 3) Syringe are not used for suctioning the oropharynx; they have entirely different purposes in medical settings.