For a minor (first-degree) burn where the skin is red but not blistered, what is the immediate recommended first aid?

✓ Correct Answer: Option C

For a minor burn, immediate cooling with cool (not cold or icy) running water (C) helps reduce pain, swelling, and further tissue damage. Ice (A) can cause frostbite and further damage. Butter or oil (B) can trap heat and increase the risk of infection. Blisters (D) should not be broken as they protect the underlying skin from infection.