In total, states had full women’s suffrage before 1920.

For 50 years before the adoption of the 19th Amendment, women in one state ... on August 26, 1920, women already had full voting rights in 15 states, most of ... state in particular that adopted women's suffrage a half-century before the ... a bill granting all female residents 21 years and older the right to vote.

Ithink the answer should be a.