Among the following methods, which one has the highest failure rate ?

Options

A. Diaphragm with spermicide
B. Condom
C. Intra-uterine device
D. Rhythm method

Answer

To determine which contraceptive method has the highest failure rate among the given options, we will analyze each method based on its effectiveness.

### Step-by-Step Solution:

1. **Identify the Methods**: The methods provided are:
- A) Diaphragm with spermicide
- B) Condom
- C) Intrauterine Device (IUD)
- D) Rhythm method

2. **Analyze Each Method**:
- **Diaphragm with Spermicide**:
- This is a dome-shaped device that fits inside the cervix and blocks sperm from entering. The spermicide used with it kills sperm, leading to a low failure rate.
- **Condom**:
- Made of latex, condoms also block sperm from fertilizing the egg. They are effective and have a low failure rate.
- **Intrauterine Device (IUD)**:
- IUDs can be hormonal or non-hormonal and work by preventing sperm from fertilizing the egg and sometimes preventing implantation. They also have a low failure rate.
- **Rhythm Method**:
- This method involves tracking the menstrual cycle to avoid intercourse during ovulation. It relies on manual calculations and can be inaccurate due to variations in the menstrual cycle. Therefore, it has a high failure rate.

3. **Compare Failure Rates**:
- The diaphragm with spermicide, condom, and IUD all have low failure rates, while the rhythm method has a significantly higher failure rate due to its reliance on timing and the potential for human error.

4. **Conclusion**:
- Among the methods listed, the **Rhythm Method** has the highest failure rate.

### Final Answer:
The method with the highest failure rate is **D) Rhythm Method**.

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