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What is the primary purpose of a closure in programming?

• To create global variables

• To encapsulate data and functions together

• To simplify syntax

• To increase the speed of a program

Which of the following best describes how closures work?

• They allow functions to access variables from their own scope only

• They restrict functions to use only global variables

• They make functions run faster

• They enable functions to access variables from an outer function's scope

In which scenario is a closure most likely to be used?

• When writing a loop

• When needing persistent state in a function

• When defining a class

• When declaring a constant

What is a common application of closures in real-world programming?

• To design user interfaces

• To create complex mathematical models

• To manage asynchronous code

• To handle file input/output operations

Why are closures important in functional programming?

• They allow for object-oriented design

• They enable the use of higher-order functions

• They improve memory management

• They simplify error handling