Respuesta :
I'm pretty sure it's the first one. The march on Washington was were Martin Luther King Jr. gave his "I Have a Dream Speech".
Answer:
a march on Washington, D.C.
Explanation:
The freedom riders were activist thatn went to the south, Rosa Parks lead a boicot on segregation on buses, and the march was from Selma to Montgomery. The only event that is right is the march on Washington DC where at the end of the march Martin Luther King gave his famous speech "I have a dream" about how he sees still to this day the effects of segregation, and that a new, better world for everyone is possible.