question: Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature?
choices.text: A whole sugar cube is added and the water is stirred. A whole sugar cube is added and the water is not stirred. A crushed sugar cube is added and the water is stirred. A crushed sugar cube is added and the water is not stirred.
choices.label: 1 2 3 4