Answer:
A) He has conflicting feelings about what he wants.
Well, Chillingworth dies at the end of the novel, which means that you can rule out B and D. A is also incorrect because Chillingworth hated Dimmesdale and wanted him dead, which did finally occur. This leaves us with C as the correct answer because Dimmesdale's confession of adultery caused him to die as well.
Pretty sure its D
Hope this helped! :)