Which one of the following diseases is a sexually transmitted disease?

Options

A. Cancer
B. Syphilis
C. Diphtheria
D. Myocarditis

Answer

To determine which of the following diseases is a sexually transmitted disease (STD), we will analyze each option provided:

1. **Option A: Cancer**
- Cancer is not classified as a sexually transmitted disease. It is caused by the uncontrolled growth of cells due to genetic mutations. Therefore, option A is incorrect.

2. **Option B: Syphilis**
- Syphilis is indeed a sexually transmitted disease. It is caused by the bacterium *Treponema pallidum*. Symptoms of syphilis can include hair loss, fever, and other systemic issues. Thus, option B is correct.

3. **Option C: Diphtheria**
- Diphtheria is a bacterial infection caused by *Corynebacterium diphtheriae*. It is primarily an airborne disease and is not transmitted through sexual contact. Symptoms include breathing difficulties and suffocation. Therefore, option C is incorrect.

4. **Option D: Myocarditis**
- Myocarditis refers to the inflammation of the heart muscle and is not related to sexually transmitted diseases. It can be caused by infections, autoimmune diseases, or exposure to certain drugs. Thus, option D is also incorrect.

**Conclusion:**
The only disease among the options that is classified as a sexually transmitted disease is **Option B: Syphilis**.

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