Spreadsheet software creates a worksheet, composed of a grid of columns and rows.
Fru, thats the only guy I watch, so ya.
The answer is A) Double.
The return type is specified before the method's signature, and the signature is composed of the the method's name and parameters.
In this case, the method is named mynewFunction, takes in an integer as a parameter, and returns a double.
Also, fun fact which is kind of unrelated: if two or more methods have the same name, they can have different functionality as long as their signature is different (different parameter types).
For the first one its NOW, I'm not sure about the 2nd, the 3rd I think is penal code cases but i could be wrong, and the 4th one sounds like voting is the most logical answer.