Per my
#517 it is accurate to call this "clarifying".
In D&D this is clarifying, as it is a question about how Social Interaction rules interact with the
fireball spell. There is ambiguity, so the rules are clear that the DM gets to assert how the interaction will play out. It's an example of how clarifying can lead into negotiating, as I will explain below.
This is an example of how clarifying leads into negotiating depending on the mode of play. Traditional DM ownership of what the rules entail means that player asks for clarification and accepts the given ruling. Negotiation
during play is discouraged. But in other modes of play it would be open to discussion how participants feel it should work, most importantly the player possessing the trait. I've observed such conversations many times in our Avatar sessions over the last few weeks.
Again, clarification.
This sounds like it will lead to negotiation, because it is moving into ambiguous areas where ownership is (if I understand the example correctly) likely shared. It sounds to me like you are picturing the GM proposing rather than asserting, due to circumstantial factors bearing on it.