Door chance

Okay, so I have 4 doors in my scene. The Player gets to chose a door to progress in the game. However, only 3 doors can progress. One door leads to death. How would I go about setting this up? I tried looking for tutorials and documents on this an I couldn’t find any. I’m not very advanced in coding. I’m not asking for code, but can anyone point me in the right direction?

Have a collider in the entrance of the death door, and using OnTriggerEnter or OnCollisionEnter, to show if the player has entered the doorway that will kill it.

Here are some resources;