It is literally called "prudent man." Why 'man' and not 'person'? Because these laws were first written when the concept of women voting was a big fat contentious issue, and those kindly men writing them didn't want to worry the pretty little heads over it.
We understand that you're probably not champing at the bit to learn about some guy who was so brilliantly good at being prudent that he had a bunch of standards named after him, or something like that, but here goes anyway.
The Prudent Man...
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