Which of the following organs is a part of the small intestine?

Options

A. Colon
B. Villi
C. Appendix
D. Rectum

Answer

To determine which organ is a part of the small intestine, we need to understand the anatomy of the digestive system, specifically the components of the small intestine.

### Step-by-Step Solution:

1. **Identify the Structure of the Digestive System**: The digestive system consists of various organs that work together to digest food. The main parts include the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus.

2. **Understand the Small Intestine**: The small intestine is a long, coiled tube where most digestion and absorption of nutrients occur. It is divided into three parts: the duodenum, jejunum, and ileum.

3. **Recognize the Role of the Small Intestine**: The small intestine is primarily responsible for the absorption of nutrients and minerals from food. It has finger-like projections called villi that increase the surface area for absorption.

4. **Differentiate Between the Organs**: In the context of the question, we need to identify which of the given options is part of the small intestine. Common organs associated with the digestive system include the stomach, large intestine, rectum, and appendix.

5. **Identify the Correct Answer**: The small intestine is distinct from the large intestine, rectum, and appendix. Therefore, if the options include parts like the duodenum, jejunum, or ileum, those would be correct. If the options are the large intestine or rectum, those are incorrect.

### Conclusion:
The correct answer to the question "Which of the following organs is a part of the small intestine?" is any of the three parts of the small intestine: duodenum, jejunum, or ileum.