"i am the virgin mary, and i've come to give birth to a new savior," says someone experiencing: a. delusions of persecution. b. delusions of reference. c. delusions of control. d. delusions of grandeur.

The correct answer is delusion of grandeur
 A delusion is simply a mistaken believe that is held by a person about himself, even when the believe is challenged by evidence suggesting the contrary.
 This is simply  delusion of grandeur and not control because the person believes they are the virgin Mary, attributing a lot of great influence to her. All over once the person has believed she is this special Mary who gave birth to Jesus. on the hand, it would be delusion of control if the person believed that Mary is talking to her and influencing her decisions.

Iam a german monk and professor of theology. i believe that the catholic church's practice of buying forgiveness of sins through indulgences is wrong. i have translated the bible into german to make it easier for more people to be able to study it. i am here to stand by my writings and i refuse your demand that i recant them