Final answer:
Clean towels do not need to be disposed of immediately after use unlike needles, gloves, or biohazard waste; they can be laundered and reused.
Step-by-step explanation:
The item that does not need to be disposed of immediately after use is D) Clean towels. Items like needles, gloves, and biohazard waste must be properly disposed of following use to prevent contamination and the spread of infection. Needles are a biohazard and potentially dangerous due to contaminated blood, which can transmit disease-causing organisms. Gloves used to protect against contamination must be discarded to prevent any spread of microbes. Biohazard waste contains biological materials that could be infectious and hence require immediate disposal. However, clean towels do not pose the same level of risk, and although they may also harbor microbes as fomites, they can usually be cleaned and reused after proper laundry procedures, unlike the other listed items which are typically single-use.