The incorrect option is c.
Topical steroids to affected areas to reduce the immune response is not considered an appropriate management or treatment measure during WP's acute episode of urticara, as this treatment may worsen the rash. Oral antibiotics to prevent secondary infection, oral antihistamines for pruritus, and cool compresses to affected areas can all be used to help manage and treat WP's urticara, but topical steroids should be avoided, as they can make the rash even worse. Therefore, option c is the incorrect choice for this question.