
Baldur's Gate 3 has choices—oodles of 'em. Choices that Larian's accounted for, for the most part. In my recent playthrough, instead of taking a certain character to a certain body for a story quest, I picked up the corpse and dumped it back in camp like a cat bringing their owner a dead bird. The dialogue still worked (though I had to have them in my party) besides one or two out-of-context lines.
However, one player has found an edge-case scenario that the game doesn't account for at all, and it's honestly pretty reasonable when you break it down. Spoilers for Act 1 and Gale's storyline to follow, as well as a minor Act 3 spoiler.