Respuesta :
Answer:
The correct answer is D. Fifty years of effort by suffragists secured approval of the Nineteenth Amendment.
Explanation:
The Nineteenth Amendment was developed to extend suffrage to women. It was proposed on June 4, 1919 and was ratified on August 18, 1920.
The amendment was the culmination of the work of the feminist movement in favor of women's suffrage, which started in 1848 with the Seneca Falls Convention, 71 years earlier. Another of the activist groups that supported the feminist struggle was the Silent Sentinels that protested in front of the White House to raise awareness about the problem.