code: function listOptions(theContacts) {
    var s = '';
    for (var contact in theContacts) {
      if (s != '') { s = s + ", " };
      s = s + contact + " (" + theContacts[contact].nameChoices + ")";
    }
    return s;
  }
docs: ----------- turn the contacts into a comma separated list of options for each contact (simple grammar)