Which of the following is a treatment option for actinic keratosis?

5-fluorouracil cream is indeed a recognized treatment option for actinic keratosis, which is a precancerous skin condition. This topical chemotherapy agent works by targeting and destroying abnormal skin cells, allowing for the growth of healthy skin in their place. It is effective because it inhibits DNA synthesis in these rapidly dividing cells, leading to their destruction.

This option is commonly used in clinical practice due to its effectiveness in reducing the lesions associated with actinic keratosis, thereby decreasing the risk of progression to squamous cell carcinoma. Treatment often involves applying the cream to the affected areas for a specific duration, and it may cause some local irritation or inflammation as it works.

Other treatments for actinic keratosis may include cryotherapy, topical immunomodulators, or photodynamic therapy, but in the context of the choices given, 5-fluorouracil is the standard pharmacological agent recommended.