The
parserPopUp.pl was updated in December 2014 so that it actually prints the options rather than just the question mark (thanks to Goeff Goehle). So you may have an older version than that. If you update your copy (you should be able to just put a current version in your course's
templates/macros directory if you don't manage the server yourself), that should do what you want. You can get a copy from the
PG github page. An even newer version is in the templates/macros directory of the PREP2015 course. I will be making a pull request to make the updated copy be part of the next release of PG soon.