Thanks a lot! I should have read that article a long time ago. I now have greater confidence that option 4 is correct. Judging from what I read, it looks like if a person has a reasonably intact ventral striatum and medial prefrontal cortex (as well as those other regions you mentioned that might also contain subjective value) they can be said to have desires whether they are conscious or not.
Note that scientists have now made some progress in understanding how desires/​preferences work. See especially the field of neuroeconomics.
Thanks a lot! I should have read that article a long time ago. I now have greater confidence that option 4 is correct. Judging from what I read, it looks like if a person has a reasonably intact ventral striatum and medial prefrontal cortex (as well as those other regions you mentioned that might also contain subjective value) they can be said to have desires whether they are conscious or not.