When teaching about intrauterine devices (IUDs) for contraception, what demonstrates client understanding?

The correct answer reflects an essential aspect of IUD care and monitoring. Checking for the strings each month after menstruation is a recommended practice for individuals with an IUD. This helps ensure that the device is still in place and functioning correctly. The strings can be felt through the cervix and serve as a way for the user to confirm that the IUD has not been expelled and is positioned correctly in the uterus. Regular checks promote awareness and allow for early identification if any issues arise, thereby contributing to effective contraception.

The other options do not accurately represent the correct information related to IUD use. For instance, IUDs typically do not need to be replaced each year; many are designed to be effective for several years, depending on the type used. Also, while some IUDs may reduce menstrual bleeding, it is not typical for periods to stop entirely, which would not align with option C. Lastly, option B refers to the use of spermicide, which is not necessary with IUDs, as they provide their own contraceptive effect without requiring additional methods for efficacy.