Loch Lomond and the Trossachs

This is another question that's asking for trouble.

In the quiz at which I officiated, the person in the hot seat answered "The Trossachs".

I was not prepared to accept this answer. I asked for a bit more, which was not forthcoming. Strictly according to the rules, I believe the question should have been passed over to the other team. Fortunately for the first team, their opponents sensed that other members of that team knew the correct answer and sportingly invited them to provide it for one point conferred.

This question effectively has a two–part answer. IMHO it should not have been asked; it would have been better to ask for the second Scottish national park (also Britain's largest) – The Cairngorms.