An early twentieth-century professional woman committed to solving the social problems of American society was . a. Harriet Beecher Stowe. b. Frances Kellor. c. Geraldine Ferraro. d. Madonna.

b. Frances Kellor

Explanation:

Frances Kellor was an American reformer in the social sector who was interested in the study of immegrants and women. It was observed that results from his study were used in solving American societal problems.

experiments.

surveys.

questionnaires.

interviews.

case studies.

participant and non-participant observation.

observational trials.

studies using the delphi method.

the supreme court plays a big role in government. the constitution gives them ability to check the president and the congresses actions and dictate if their actions are allowed by the constitution or not.

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