Final answer:
William Jennings Bryan's politics can best be characterized as a Democrat who embraced Populist policies. He supported the silver standard and the subtreasury system, which were key issues for farmers.
Step-by-step explanation:
William Jennings Bryan's politics can best be characterized as C. He was a Democrat who embraced Populist policies. Bryan was a charismatic Nebraska politician who became the presidential nominee of both the Populists and the Democrats in 1896. He supported the silver standard, which was a key issue for farmers, and he advocated for the subtreasury system that was part of the Populist platform. Although he didn't win the elections, Bryan's ideas and goals had a lasting impact on American political culture.