The correct answer is D. It may or may not throw anything.
The function char someFunction(int x) is declared to return a character. However, it is not declared to throw any exceptions. Therefore, it may or may not throw an exception, depending on the implementation.
If the implementation chooses to throw an exception, it could be for any reason. For example, if the value of x is out of range, the implementation could throw an out_of_range exception.
If the implementation does not choose to throw an exception, the function will simply return the character value of x.
In conclusion, the function char someFunction(int x) may or may not throw anything. It depends on the implementation.