Progesterone is described as?

• A. A mineral
• B. A lipid
• C. A sex hormone whose levels increase during pregnancy
• D. An enzyme

Answer: (C)

Progesterone is a hormone that regulates female reproduction and pregnancy. It is a steroid hormone produced by the ovary after ovulation and later by the placenta during pregnancy. Its rising levels after ovulation help prepare and maintain the uterine lining and keep the uterus from contracting, creating a supportive environment for gestation. Because of these reproductive regulatory roles and the clear association with pregnancy, describing it as a sex hormone whose levels increase during pregnancy captures its function best. It’s not a mineral or an enzyme. While steroids are lipids in a chemical sense, the most informative takeaway here is its hormonal role and how its levels rise to support pregnancy.