In which of the following disorder of faeces are retained within the rectum as the bowel movements occur irregularly?

Options

A. Constipation
B. Vomiting
C. Diarrhoea
D. Jaundice

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about a disorder where feces are retained in the rectum and bowel movements occur irregularly.

2. **Defining the Options**: We need to analyze each option provided in the question to identify which one fits the description given.

3. **Analyzing Constipation**:
- Constipation is characterized by the passage of stool less than three times per week.
- In this condition, feces are indeed retained in the rectum, leading to irregular bowel movements.

4. **Analyzing Vomiting**:
- Vomiting is a reflex action that expels contents from the stomach and does not relate to the retention of feces in the rectum.

5. **Analyzing Diarrhea**:
- Diarrhea involves the frequent passage of watery stools, typically more than three times a day. This is the opposite of fecal retention.

6. **Analyzing Jaundice**:
- Jaundice is related to liver dysfunction and results in yellow discoloration of the skin and eyes. It does not pertain to bowel movements or fecal retention.

7. **Conclusion**: Based on the definitions and characteristics analyzed, the disorder where feces are retained in the rectum with irregular bowel movements is **Constipation**.

### Final Answer:
The correct answer is **Constipation**.