Question

what gives skin its pinkish hue, especially in fair - skinned individuals?
sebum
melanin
carotene
hemoglobin

Explanation:

Sebum is oily, not related to color. Melanin causes brown/black pigment. Carotene gives yellow-orange. Hemoglobin in blood vessels shows through fair skin, creating pinkish hue.

Answer:

D. Hemoglobin