Which hormone is responsible for stimulating the production of melanin in the skin?

A Adrenocorticotropic hormone (ACTH)
B Melanocyte-stimulating hormone (MSH) ✓
C Thyroid-stimulating hormone (TSH)
D Growth hormone (GH)

Explanation

Melanocyte-stimulating hormone (MSH) stimulates the production of melanin in the skin, causing it to darken.

Source

Berne and Levy Physiology
Hormones and Endocrine Markers Endocrinology Pigmentation Hormones Easy MEDICAL Confidence: high