The most correct answer is probably that you get the choices the developers put into that dialogue

apart from that, the game should react to your race, class, proficiencies and for clerics their deity. If you are playing the Dark Urge, you get additional choices/content. I also noted, that some choices I made for my main character acutally locked me out of at least one dialogue option in a specific quests. Don't want to spoil anything... Apart from that I think, everybody gets generic choices like strength and dex.