The correct answer would be D, pain management. Solar burns - or sun burns - can be harmful to skin and can leave the person in a lot of pain. If the sunburn is very bad and blistering, infections (answer B) could be a problem, but it would be monitored and wouldn’t be a big concern as far as primary things go until it got bad or wasn’t caught in time.
Fluid resuscitation would also be something a nurse would keep on her list of potential worries, but wouldn't worry about unless the sunburn was bad enough to damage lower layers of skin too. Body image could be solved after the sunburn heals, so answer C is way down on that nurse’s list of priorities for this patient.
With a superficial partial thickness burn such as a solar burn (sunburn), the nurses main concern is pain management. Fluid resuscitation and infection become concerns if the burn extends to the dermal and subcutaneous skin layers. Body image disturbance is a concern that has a lower priority than pain management.