Which sentence has a verb in the active voice? a. martin luther king, jr., fought for african americans’ rights. b. martin luther king, jr., was assassinated. c. many people were by the work of martin luther king, jr. d. great changes were brought about by martin luther king, jr.

A. Martin Luther King, Jr., fought for African Americans’ rights. 

All the other verb phrases have a helping verb before the action verb.

A. Martin Luther King, Jr., fought for African Americans’ rights. 
B. Martin Luther King, Jr., was assassinated. 
C. Many people were helped by the work of Martin Luther King, Jr. 
D. Great changes were brought about by Martin Luther King, Jr.