You should use infection control measures when doing laundry:

The answer you provided highlights the importance of using infection control measures in specific situations, particularly when there are higher risks of contamination. Infection control measures are essential to prevent the transmission of pathogens, especially in environments where there may be vulnerable individuals.

Using infection control measures in shared housing with non-relatives is vital because individuals from different backgrounds may carry different pathogens, increasing the risk of cross-contamination. Furthermore, implementing these measures whenever there are bodily fluids present is crucial, as bodily fluids can be a direct source of transmission for many infectious diseases.

While one might consider universal precautions suggest the need for infection control measures at all times, option D specifically acknowledges that the necessities are heightened under certain conditions—shared environments and the presence of bodily fluids—which correspond to real-life practices in managing infection risks effectively. This selective approach emphasizes the environments and circumstances where the risk of infection is most pronounced, thereby guiding safer laundry practices.