Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Prostate is the most common type of cancer in adult males.
What is the most common type of cancer in adult males?

Under a crushed sugar cube is added and the water is stirred conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature.
Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature?

The adult cells that form the butterfly begin growing in embryo developmental stage.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The adult cells that form the butterfly begin growing in what developmental stage?

