A 3-year-old girl develops melena and bleeding per rectum. Examination reveals multiple cutaneous hemangiomas involving the face, upper back, and both extremities. Upper and lower endoscopies show multiple hemangiomas involving the stomach, small intestine, and sigmoid colon. Other lab investigations are normal. Of the following, the NEXT step in the management of this girl is

Correct Answer: D

Rationale: Packed RBCs transfusion is the next step to address acute bleeding and stabilize the patient.

Correct Answer: B

Rationale: Collagen is a key protein in the dermis that provides structural support and strength to the skin, not elasticity (which is due to elastin), color, or UV protection.

Correct Answer: B

Rationale: Eccrine sweat glands are distributed across the body and secrete a watery sweat to regulate temperature, unlike sebaceous glands which produce sebum.

Correct Answer: C

Rationale: Folic acid synthesis is not a protective function of the skin; the other options (stratum lucidum, desmosomes, Merkel cells) contribute to structural integrity or sensation.

Correct Answer: C

Rationale: Excessive sun exposure is a major risk factor for skin cancers, and limiting it can reduce risk; they can spread beyond the epidermis if untreated.