Select the most appropriate synonym for the highlighted word in the given sentence.
An oxygen cylinder is used to deliver oxygen through the patient's nasal orifice.

Correct option is D

The correct synonym of the given word is (d) Opening.
Orifice: A bodily opening or hole, especially one that opens into the body, such as a mouth or nostril. (छिद्र / छेद / मुख)
Example: The orifice must be cleaned before inserting the medical device.
Opening: A hole or space through which something can pass. (छेद / रास्ता)
Example: The medicine was applied through a small opening in the skin.
Synonyms: aperture, hole, passage, slit
Antonyms: closure, blockage, seal, plug
Meanings of all the other given options:
· Origin: The point at which something begins. (मूल / उद्गम)
· Ornate: Highly decorated or elaborate. (सजावटी / अलंकृत)
· Ordained: Officially appointed or established. (अभिषिक्त / ठहराया गया)