Question

what is implied by the argument of a function

Answer 1

Argument of a function means its detail. 
Its proper detail is given.

Answer 2

In a programming language,when a function is called, some value is passed by the calling function, known as the argument.There are various methods or functions made for the purpose dividing each task separately, for making the code easy to understand and debug.

When these functions are called by any other functions, there are some values passed to those function, on the basis of the value passed to the function, the execution process depends on it.