A viral puzzle is confusing people online with one simple question: Which glass has the most water? The four glasses, labeled A, B, C, and D, all appear to have similar water levels, but each contains a different object — scissors, a paper clip, an eraser, and a wristwatch.
The trick is understanding that larger objects displace more water. Even if the water lines look the same, the glass with the smallest object actually contains the most water.
The correct answer is Glass B, because the paper clip takes up the least space, leaving more room for water.