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Question 1:  What is a closure in JavaScript?

(A) A block of HTML code

(B) A function bundled with its lexical environment

(C) A JavaScript loop

Question 2:  Closures are created every time:

(A) A function is called

(B) A function is defined inside another function and returned

(C) A variable is declared

Question 3:  What can closures access?

(A) Only global variables

(B) Only their own variables

(C) Their own scope & outer function’s scope and global scope

Question 4:  Why are closures useful?

(A) To loop through arrays

(B) To create private variables

(C) To style HTML

Question 5:  Which of the following best describes a closure?

(A) A design pattern for DOM manipulation

(B) A function that remembers the variables from where it was created

(C) A class in JavaScript

Question 6:  Which keyword is commonly used to define a closure?

(A) class

(B) const

(C) function

Question 7:  Can closures help in data encapsulation in JavaScript?

(A) No

(B) Yes

(C) Only in strict mode

Question 8:  What will a closure retain after the outer function has returned?

(A) Nothing

(B) Only local variables

(C) The scope chain of the outer function

Question 9:  Which scenario is the best use case for closures?

(A) Adding HTML content

(B) Creating private counters

(C) Changing CSS styles

Question 10:  In JavaScript, closures are formed when:

(A) A function is declared in the global scope

(B) A function returns another function that uses its variables

(C) A variable is assigned a string