I think this article ought to have been put in a compact from.

The correct answer is A. expanded.

The word “compact” means “small and neat”. The opposite of “compact” is “expanded”. So, if you think an article ought to have been put in a compact form, you are saying that you think

The other options are incorrect because they do not mean “shorter and more concise”.

• Option B, “enlarged”, means “made larger”.
• Option C, “diffused”, means “spread out”.
• Option D, “broken”, means “divided into pieces”.

I hope this explanation is helpful!