Here’s the key: when an object is placed in water, it displaces some of that water. The bigger the object, the more space it takes up—meaning less actual water fits in the glass.
So, the glass with the smallest object will contain the most water.
- Glass A: Paperclip (smallest object)
- Glass B: Baseball (largest object)
- Glass C: Eraser (medium)
- Glass D: Watch (medium-large)
Correct answer: Glass A has the most water.