How can I quiz , track, and score different learners in same elearning?

I am creating an elearning (in Storyline 2) that provides information on a process that requires multiple people to use as a team. There is information on the process for everyone. There is also information specific to each role that participates in the process. (Different roles have different responsibilities and activities at different times.)

The introduction and general information will be presented to everyone. Role specific information will be provided for each role. I know there are plenty of ways to make branching work. Here's my dilemma: what is the easiest way to provide a quiz with role specific questions that can be graded and tracked in the LMS? Do I Include the quiz the specific information in the branched information for each role? Or is there an alternative? There are 16 different roles. I can always copy the elearning and just have a different quiz at the end. But I think 16 separate elearnings is excessive. I'm sure the client will balk at that suggestion. I need a simple solution -- the client has asked that the elearning be straight-forward - no flash or anything outside of Storyline 2. Do you have any suggestions on the simplest way to do this? Will including the quiz to the branched information work? Is there a third alternative?   Thanks everyone!