In "martin luther king jr.: he showed us the way" by c_sar chàvez, which statement is an example of logos?

a. if we resort to violence then one of two things will happen: either the violence will be escalated and there will be many injuries and perhaps deaths on both sides, or there will be total demoralization of the workers.
b. the burdens of generations of poverty and powerlessness lie heavy in the fields of america.
c. the american people and people everywhere still yearn for justice.
d. we are not blind to the feelings of frustration, impatience and anger