Which of the following individuals is most likely a follower of zoroastrianism?

a. a middle eastern shopkeeper who believes that the one true god made an agreement to protect him as long as he follows certain rules
b. a persian government official who spends a great deal of time focusing on whether his actions have been good or evil
c. an indian farmer who performs nightly rituals to several different gods in an attempt to bring peace and harmony into his life
d. a mesopotamian priest who prays to gods of sun, rain, and soil to ensure his city experiences a good harvest