The statement **`global myName`** is necessary to modify a global...

The statement global myName is necessary to modify a global variable inside a function in many programming languages like Python.

Explanation:

If a variable is declared at the global scope, you need to explicitly indicate inside a function that you are referring to the global variable and not creating a new local variable. This is done using the global keyword in languages like Python.

Code Behavior:

Here’s an illustration of how the global keyword works:

myName = "John"  # Global variable

def modify_name():
    global myName  # Declares that `myName` refers to the global variable
    myName = "Jane"  # Modifies the global variable

modify_name()
print(myName)  # Outputs: Jane

Without the global keyword, a new local variable with the same name would be created, and the global variable would remain unchanged:

myName = "John"  # Global variable

def modify_name():
    myName = "Jane"  # Creates a local variable (does NOT modify the global `myName`)

modify_name()
print(myName)  # Outputs: John

So, the correct answer to modify the global myName variable inside a function is: global myName.