Final answer:
The appropriate instruction for applying the corticosteroid cream for a child with atopic dermatitis (eczema) is to use the cream sparingly and avoid occlusive dressings.
Step-by-step explanation:
The appropriate instruction for applying the corticosteroid cream for a child with atopic dermatitis (eczema) is b) Use the cream sparingly and avoid occlusive dressings. Corticosteroid creams, such as hydrocortisone, should be applied thinly and sparingly to the affected areas of the skin. Occlusive dressings, such as bandages or plastic wraps, should be avoided as they can increase the absorption of the cream and may cause side effects. It is important to follow the healthcare provider's instructions and avoid applying the cream to unaffected areas or mixing it with moisturizer.