I think a fake choice will help, what you can do is give a choice to have the MC try to argue the doc is a suspect and get shut down and have to pick the 2 other choices, then drop a hint immediately to player that they can have the path open up again later when MC gather more evidence. I was seeing the possibility of it leading there with the 2 choices, but it's still hard as first time player to want to get through to it without being able to voice myself. Also glad to know there is a setup before leading to this part.