This is the first choice in the game, at the end of The Belgian problem you can choose one of two options. Without spoiling anything the choice is blatant and both sides offer a stated benefit.
You need to take the choice that corresponds to this title (Trying not to use a spoiler, but choose the option that gives you a cash bonus as it's stated benefit.)
This trophy IS missable, you can save during the mission to be able to replay the mission and choose the other choice.
The other trophy is