Which of the following is an appropriate choice for cleaning a surface contaminated with blood or body fluids

Boiling water can kill some pathogens, but it is not a reliable method for disinfecting surfaces contaminated with blood or body fluids. It may not effectively disinfect all types of microorganisms, especially those that are more resilient or contained within organic material, making it insufficient for biohazard cleanup.

Povidone-iodine is primarily used as a skin antiseptic for pre-operative cleaning and wound care. While it is effective against many microbes, it is not the best choice for cleaning surfaces, particularly larger areas contaminated with blood or body fluids, as it may not provide a sufficient level of disinfection.

While 70% isopropyl alcohol is effective against many bacteria and viruses, it is not as effective against certain pathogens found in blood, such as Hepatitis B and C viruses, when compared to a bleach solution. Therefore, it may not provide the comprehensive disinfection required for cleaning surfaces contaminated with blood or body fluids.