FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A nested function is a function that is completely contained within a parent function.

Detailed explanation-2: -Detailed Solution Option 3 is the correct answer: A function inside a function is called a Nested function.

Detailed explanation-3: -Nested (or inner, nested) functions are functions that we define inside other functions to directly access the variables and names defined in the enclosing function. Nested functions have many uses, primarily for creating closures and decorators.

Detailed explanation-4: -Nested functions A function is called “nested” when it is created inside another function. It is easily possible to do this with JavaScript.