D. Power. Hope this helped.
Answer:
Apprehension seems to exist among the people of the Southern States, that by the accession of a Republican Administration, their property, and their peace, and personal security, are to be endangered. There has never been any reasonable cause for such apprehension.
Explanation:
The word mutual refers to a relationship between two things (or people) that are the same. For example, if two people enjoy each other's company then their feelings for each other are mutual.
I’d say b since it’s elaborating on who everyone is