Hello,

I would advice you to give compartment exams in both Economics and BST. This may create a bit of pressure on you since you will have to study both of these but it's better to be on the safer side considering you only have choose one between the two. In case you fail in compartment in one of these, you will have an extra subject to save you.

However, if you are still determined to give only one exam then I would recommend you to go for BST since it is a more relatable and interesting subject that can easily be learnt through reading 2-3 times as economics requires you to learn diagrams and graphs.

I hope this helps,

All the best