Final answer:
To prevent the most common serious complication of PD, nurses should use strict aseptic technique in dialysis procedures.
Step-by-step explanation:
To prevent the most common serious complication of PD, it is important for the nurse to use strict aseptic technique in the dialysis procedures (option b). This means maintaining a sterile field and following proper infection control practices to prevent sepsis. By doing so, the nurse can minimize the risk of contamination and infection during the dialysis procedure, reducing the chances of complications.