Passage Summary: Doing a math problem doesn't affect everyone's awareness of their surroundings the same way; some get more distracted, while others become more alert.

Reasoning: Mathematical puzzles increase environmental awareness for most, but decrease it for visualizers and increase it for those whose brains rest between steps.

Analysis: This stimulus provides a set of facts regarding how a single task—math puzzles—can produce wildly different cognitive states in different people. The key is the variability based on the individual's internal processing method, such as 'visualizing' versus 'resting.' When looking for the most strongly supported statement, avoid choices that make broad generalizations about all tasks. Instead, look for a synthesis that acknowledges that the way a person processes information determines their level of awareness of their surroundings.