A nurse is educating a patient who has been prescribed tetracycline to treat their acne vulgaris. Which instruction should the nurse prioritize to prevent photosensitivity reactions?

Apply sunscreen with at least SPF 15 and wear protective clothing when outdoors.

Take the medication with dairy products to reduce stomach upset

Increase sun exposure gradually to build tolerance to sunlight.

Lime fluid intake to avoid dilution of the medication in the bloodstream.