Ginge: like one or two others doing this delicious Harpers, I thought I'd finished ages ago, then suddenly realized I hadn't answered the q. posed in the introductory text!
Of course I don't want you to reveal too much BUT
1. Do you think we're really supposed to choose 1 of the 12 & write it out specially?
and 2. Can you give any kind of subtle hint here as to how you chose yours (if indeed you did)?
Again & again one discovers one has not read everything properly!