Final answer:
After providing a service, single use items should be discarded and multi use supplies need cleaning and disinfection during the 'Complete' stage to maintain health and safety standards.
Step-by-step explanation:
Among the given options, d. Complete refers to the stage at which you should discard single use items and clean and disinfect multi use supplies. After providing a service, it is essential to properly dispose of single-use items to prevent cross-contamination and maintain a sanitary environment. Multi use supplies must also undergo thorough cleaning and disinfection if they are to be used again with another client or patient, ensuring they are free of any contaminants and safe for use. This process is crucial in maintaining health and safety standards in a medical or service environment, and it helps to prevent the spread of infection.