Progesterone and estradiol are

Options

A. Peptide hormones
B. Amino acid derivatives
C. lodothyronines
D. Steroid hormones

Answer

**Step-by-Step Solution:**

1. **Identify the Types of Hormones:**
- Hormones can be classified into three main categories: steroid hormones, peptide hormones, and amino acid-derived hormones.

2. **Understand the Characteristics of Steroid Hormones:**
- Steroid hormones are derived from lipids and have structures similar to cholesterol. They are fat-soluble and can easily pass through cell membranes.

3. **Identify Progesterone and Estradiol:**
- Progesterone and estradiol are both hormones produced in the female body. They play crucial roles in the menstrual cycle and pregnancy.

4. **Classify Progesterone and Estradiol:**
- Since both progesterone and estradiol are derived from lipids and share structural similarities with cholesterol, they fall under the category of steroid hormones.

5. **Conclusion:**
- Therefore, the correct classification for progesterone and estradiol is that they are steroid hormones.

**Final Answer:**
Progesterone and estradiol are steroid hormones.

---