The correct answer is C. Hoover's popularity fell farther, ultimately costing him his reelection.
Herbert Hoover's response to the Bonus Army, a group of World War I veterans who protested in Washington, D.C., for the immediate payment of their bonuses, was widely criticized. When the U.S. Army was called in to disperse the veterans in July 1932, it resulted in violent clashes that further damaged Hoover's reputation and contributed to a decline in public support. This incident played a role in his defeat in the 1932 presidential election.