Gonorrhoea is caused by

Options

A. Treponema pallidum
B. Entamoeba gingivalis
C. Mycobacterium leprae
D. Neisseria gonorrhiae

Answer

**Step-by-Step Solution:**

1. **Identify the Disease**: The question asks about the causative agent of Gonorrhea, which is a sexually transmitted disease (STD).

2. **Review the Options**: The options provided are:
- A. Treponema pallidum
- B. Entamoeba gingivalis
- C. Mycobacterium leprae
- D. Neisseria gonorrhoeae

3. **Analyze Each Option**:
- **Option A: Treponema pallidum** - This bacterium is known to cause syphilis, another type of STD, but not gonorrhea.
- **Option B: Entamoeba gingivalis** - This is a protozoan that is associated with gingivitis, not gonorrhea.
- **Option C: Mycobacterium leprae** - This bacterium is responsible for leprosy, which is unrelated to gonorrhea.
- **Option D: Neisseria gonorrhoeae** - This is the bacterium that specifically causes gonorrhea.

4. **Conclusion**: After analyzing all the options, it is clear that the correct answer is **Option D: Neisseria gonorrhoeae**.

**Final Answer**: Gonorrhea is caused by **Neisseria gonorrhoeae**.

---