Final answer:
A hormonal implant offers reversible contraception with high effectiveness, with less than 1 percent risk of failure, making it a highly reliable choice.
Step-by-step explanation:
The advantage of using a hormonal implant is that it provides reversible contraception. This is a method where hormones are implanted under the skin to prevent pregnancy by inhibiting ovulation. Once removed, even after long-term use, fertility returns to normal immediately. This method has a high success rate with less than 1 percent failure, making it one of the most effective reversible contraception methods available.