Final answer:
The 1889 Washington constitution granted African American men the right to vote, but they still faced discrimination and were not allowed to hold political office.
Step-by-step explanation:
While Washington's 1889 constitution gave African American men the right to vote, they still faced discrimination. They were not allowed to hold political office. However, the option OC (could be enslaved) is incorrect and unrelated to the question. Furthermore, the option D (could not send their children to public school) is also incorrect as African American children were allowed to attend public schools.
Learn more about African American rights after the 1889 Washington constitution