Unlike the previous economic downturn, which was primarily caused by speculative investments, the current recession is largely the result of a sudden halt in global supply chains.

The correct answer to the question "Unlike the previous economic downturn, which was primarily caused by speculative investments, the current recession is largely the result of a sudden halt in global supply chains." is Option A: Unlike the previous economic downturn, which was primarily caused by speculative investments,.

The other options — B) Unlike the previous economic downturn, primarily caused by speculative investments,, C) Different from the previous economic downturn, which was primarily caused by speculative investments,, D) In contrast to the previous economic downturn, which was primarily caused by speculative investments, — are incorrect for this GMAT Exam Prep question. As explained above: Option A correctly uses 'Unlike' to compare two nouns ('downturn' and 'recession') and includes a clear relative clause ('which was primarily caused...') to describe the previous downturn without amb…