Review the table on contraception use rates from the Centers for Disease Control. Form of ContraceptionType of MethodTypical Use Failure RateCondom (male)Barrier13 percentCondom (female)Barrier21 percentDiaphragmBarrier17 percentImplantHormonal0.1 percentInjectionHormonal4 percentIntrauterine DeviceBarrier/ Hormonal0.4 percentIntrauterine Device (copper)Barrier0.8 percentPatchHormonal7 percentSpermicideBarrier21 percentBased on the table, which hormonal method is the most effective?