Answer: many speakers, present tense :)
Explanation: the tone was alarmed and fearful meaning they were like aware of others around them. then the moods show that it was at that exact time which means present.
According to their website, "ADAPT is a national grass-roots community that organizes disability rights activists to engage in nonviolent direct action, including civil disobedience, to assure the civil and human rights of people with disabilities to live in freedom."
I think about 705 people.
Well, all of the mentioned people have brought about important changes (without military support), so A and B are false.
Martil Luther King lived in the the 20th century, so D. is false too. The right answer is C.