Final answer:
The correct order of contraceptive methods by effectiveness is Abstinence, Sterilization, The ring, and Withdrawal(option D) . Abstinence is 100% effective, while Sterilization is considered the most effective reversible method. Withdrawal has the highest failure rate among these options.
Step-by-step explanation:
The ranking of contraceptive methods in order of most effectiveness from those listed would be: Abstinence, Sterilization, The ring, and Withdrawal. Therefore, the correct option that has the contraceptive methods ranked in order of most effectiveness is D. Abstinence - Sterilization - The ring - Withdrawal. Abstinence is completely effective as it avoids exposure to pregnancy risks entirely. Sterilization, which includes procedures like vasectomy and tubal ligation, is considered the most effective contraceptive method, but it is also irreversible. The contraceptive ring, or NuvaRing, is a hormonal method with a lower failure rate than many other active contraceptives. Lastly, withdrawal is the least effective since it relies on perfect timing and control, which can often be unpredictable.