Question

to (reassure) even those southerners who have accepted the following: i hold that in contemplation of universal law and of the constitution the union of these states is perpetual. perpetuity is implied, if not expressed, in the fundamental law of all national governments. it is safe to assert that no government proper ever had a provision in its organic law for its own termination. which of the following rhetorical devices did president lincoln use in these lines to try to persuade southerners?

Explanation:

Lincoln uses reasoning based on the foundational law of governments and the implied perpetuity of the Union, relying on logical structure and legal/governmental principles to make his case. This is a logical appeal, as it uses factual and structural reasoning to persuade.

Answer:

C. logical appeal