"Studies show coffee increases alertness. However, excessive consumption leads to anxiety. Therefore, moderate coffee consumption is optimal." The argument proceeds by:

The correct answer to the question ""Studies show coffee increases alertness. However, excessive consumption leads to anxiety. Therefore, moderate coffee consumption is optimal." The argument proceeds by:" is Option A: Presenting two extreme positions and finding a middle ground.

The other options — B) Citing authority to support a claim, C) Using an analogy, D) Attacking the opposition — are incorrect for this LSAT Exam Prep question. As explained above: The argument presents the benefit of coffee (alertness) and its risk (anxiety), then concludes with a moderate position — a classic middle-ground approach.