Final answer:
The correct treatment for the 34-year-old female experiencing eye irritation and redness is to gently irrigate the eye and tape it closed.
Step-by-step explanation:
The correct treatment for the 34-year-old female who feels like she has a grain of sand in her eye and has redness in the eye and surrounding area would be option b) gently irrigating her eye and taping the affected eye closed to prevent it from drying out.
Gently irrigating the eye can help flush out any foreign body or irritant that may be causing the discomfort. Taping the affected eye closed can prevent further irritation and protect the eye from drying out.
It is important to avoid options a), c), and d) as they can potentially worsen the symptoms or cause further damage to the eye.