Final answer:
The typical standard minimum resistance for personnel ground straps is 1 megohm, or 1,000,000 ohms. However, out of the provided options, 500,000 ohms is the closest value, even though it's not the standard minimum resistance.
Step-by-step explanation:
The minimum resistance for personnel ground straps is typically recommended to be 1 megohm (1,000,000 ohms), which is not one of the options provided in the question. However, given the choices available in the question, the closest answer would be 500,000 ohms, understanding that this value is not the standard minimum but may be considered a permissible value depending on the specific circumstances and standards in place. It is important to ensure that personnel ground straps have sufficient resistance to prevent an unsafe level of current from flowing through a person in case of contact with an electrical source, but low enough to allow static electricity to dissipate safely.