Claude Pepper, when elected, worked on Protecting the interests of American seniors, workers, and the poor. Hence, it is option D.
In 1962, Pepper won election to a newly-created district in the United States House of Representatives. He emerged as a staunch anti-Communist, and strongly criticized Cuban leader Fidel Castro. Pepper served as chairman of the House Committee on Aging, and pursued reforms to Social Security and Medicare.
Therefore, the statement that depicts what he worked on is the option D.
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