Final answer:
The closest option for sanitization using steam is 'A. 171°F for 15 secs', but none of the options meet typical medical sterilization standards, which require higher temperatures and longer exposure times.
Step-by-step explanation:
The question pertains to the temperature and time required to sanitize using steam, which is a method of moist-heat sterilization. According to standard operating procedures for autoclaves, used for sterilization in medical settings, the typical temperatures are 121 °C (250 °F) or sometimes 132 °C (~270 °F) at a pressure of approximately 15 to 20 psi, for at least 20 minutes. None of the options provided (171 °F for 15 secs, 200 °F for 5 secs, 225 °F for 5 secs, 145 °F for 30 secs) meet these standard operating conditions. However, in the context of food safety, bacteria can typically be killed by heating food to a temperature of at least 74 °C (165 °F). If we consider options close to this temperature and the requirement for steam to directly contact the materials, the closest option that could potentially sanitize is A. 171 °F for 15 secs, though it is still not in line with the typical sterilization parameters for complete sterilization.