Question 2 of 25 We knew President Roosevelt would pass through Michigan during his campaign, but we never expected him to stop at little old Goldwater. He even shook my hand right there on the train platform and gave a speech about how his New Deal will help folks find jobs. -Martha Jackson, diary (1936) Which approach is the best way to confirm the credibility of this source? OA. Through inference and analysis B. Through corroboration with other sources C. By analyzing the author's credentials D. By applying techniques of historiography C​