Respuesta :
Answer:
1. Martin Luther King, Jr. fought for a cause greater than himself.
Explanation:
The first option if the one that would work better as a topic sentence for an outline at level A. This sentence contains a clear main idea that can be expressed in a few words. Moreover, it is a sentence that expresses an idea that is general and lacks specificity. This allows for several other sentences to be included as details at the next level of the outline.