Which of the following correctly defines a block scope?

How can you access a variable declared in an inner block from an outer block?

A). Using the var keyword

B). Using the let keyword

C). Using the const keyword

D). Using the this keyword

How does block scope help prevent variable hoisting issues?

A). By moving variables to the top of the code

B). By restricting variables to their block

C). By making variables accessible globally

D). By assigning default values to variables

What is block scope in JavaScript?

A). Variables scoped globally

B). Variables scoped within a function

C). Variables scoped to a block

D). Variables scoped to an object

What happens if you try to access a block-scoped variable outside its block?

A). The variable is accessible globally

B). The variable is accessible within its block

C). An error occurs

D). The variable is accessible within a function

What is the output of console.log(blockVar); outside a block if let blockVar = 'Block'; is declared inside a block?

A). Block

B). undefined

C). Error

D). null

How does block scope affect the visibility of variables in nested blocks?

A). Variables are only visible within their immediate block

B). Variables are visible within all nested blocks

C). Variables are only visible within functions

D). Variables are globally visible

What is the output of console.log(outerVar); outside outerFunction if let outerVar = 'Outer'; is declared inside outerFunction?

A). Outer

B). undefined

C). Error

D). null

What does the Temporal Dead Zone (TDZ) refer to?

A). A zone with no variables

B). A zone where variables are in memory but not accessible

C). A zone where variables are accessible globally

D). A zone with limited variable scope

What is the purpose of block scope in JavaScript?

A). To limit the visibility and accessibility of variables

B). To make variables global

C). To create constants

D). To execute functions

Which keyword introduces block-scoped variables in JavaScript?

A). var

B). let

C). const

D). function