Read the outline. a. 1. martin luther king, jr. fought for a cause greater than himself. 2. martin luther king, jr. was brave. 3. martin luther king, jr. led a peace movement. which sentence is the best topic sentence to complete the outline at level a? martin luther king, jr. gave many historically significant speeches. martin luther king, jr. was a leader and a hero. martin luther king, jr. had ideas that changed america. martin luther king, jr. was a highly educated man.

Martin Luther King, Jr. gave many historically significant speeches is a true statement  

Explanation:

Martian Luther king Jr. was the minister who became the leader of the civil rights movement. He fought for the equal rights of African Americans who were so poorly treated through separation and discrimination. He believed in equality; that America should be fair to everybody irrespective of his or her race. He gave a lot of speeches based on equality to enlighten people of United States

it is an infinitive phrase with a subject.