Final answer:
Zora's second Hoodoo instructor, known for having strong hoodoo powers, is Daddy Stovepipe.
Step-by-step explanation:
The character in question, Zora's second Hoodoo instructor, who is noted for having strong hoodoo powers, is Daddy Stovepipe. This question likely pertains to a novel or literary work where characters practice Hoodoo, a traditional African American folk spirituality. Given the context of the question, it does not seem to refer to a historical figure such as High John the Conqueror, who is a legendary folk hero rather than a literal instructor.
Additionally, the character Mr. Miles does not appear to fit the description provided. Pappy Joe sounds like a familiar character name but without the specific plot or character details, it is difficult to confirm his role as Zora's instructor. Therefore, the answer to the question, based on the given options, is c. Daddy Stovepipe.