"First" and "on the other hand" are examples of what type of transition?

Areopagitica was a famous early defense of freedom of expression. Its author was:

a) Ben Franklin; b) J.J. Rousseau, c) John Milton; d) Thomas Jefferson; e) John Locke.

Personal experiences, examples, illustrations, statistics, and quotations are examples of _______.

a. main points b. supporting material c. material only for the introduction d. types of introductions