Read the sentences that describe Douglass's reaction to Hugh Auld's forbidding Sophia to teach Douglass to read. "It was a new and special revelation, explaining dark and mysterious things, . . . . I now understood . . . the white man's power to enslave the black man. . . . From that moment, I understood the pathway from slavery to freedom." What mood does this description of the "revelation" create?
a. a mood of troubled doubt
b. a mood of defiance and anger
c. a mood of clarity and purpose
d. a mood of joyful merriment