Final answer:
The most recently developed method of selecting candidates for office is the direct primary, where voters directly choose their party's nominee for office.
Step-by-step explanation:
The most recently developed method of selecting candidates for office is the direct primary. In a direct primary, voters directly choose their party's nominee for office, rather than relying on party leaders or politicians to make the decision. This method is considered more democratic and inclusive, as it allows for greater participation from the general public.
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