Final answer:
Premarin comes from a horse and is used to relieve symptoms of menopause in women.
Step-by-step explanation:
The correct answer is a. Premarin.
Premarin is a medication that is derived from the urine of pregnant mares, which is why it comes from a horse. It is used to relieve symptoms of menopause in women.
Lanolin is a wax-like substance that is found in the wool of sheep and is commonly used in skincare products. Accutane is a medication used to treat severe acne, and Botox is a neurotoxin that is used for cosmetic procedures.