The correct answer to this puzzle is Glass A (Wide Bottom).
The Logic Behind It:
Glass A (Wide Bottom): This glass expands significantly at the base. Because the bottom section is much wider than the rest of the glasses, it holds a larger volume of water despite the narrower opening at the top.
Glass B (Narrow Top): This glass is quite slender and tapers inward at the middle and top, which reduces its overall water capacity.
Glass C (Angled): This glass is tilted, causing the water level to reach the rim on one side while leaving a lot of empty space on the other.
Glass D (Straight): This is a standard cylindrical glass, but its overall width is uniform and noticeably narrower than the wide base of Glass A.
