Which of the following statements about const is true?

What does the const keyword signify in JavaScript?

A). Constant variable

B). Mutable variable

C). Global variable

D). Block-scoped variable

What happens if you try to declare a const variable without initializing it immediately?

A). SyntaxError

B). ReferenceError

C). TypeError

D). No error, the variable remains undefined

What is the primary distinction between const and let in JavaScript?

A). const variables are immutable

B). let variables are block-scoped

C). const variables have function scope

D). let variables can be reassigned

Which of the following is NOT an example of a block in JavaScript?

A). Function body

B). if statement body

C). while loop body

D). Object literal

Which keyword is used to declare block-scoped variables in JavaScript?

A). var

B). let

C). const

D). block

What will be the output of the code above?

A). 10

B). 20

C). Error

D). Undefined

Which of the following statements is true about constants declared using const?

A). They can be reassigned multiple times

B). They are hoisted to the top

C). They are mutable

D). They are immutable

Which of the following statements is true about block scope in JavaScript?

A). Variables declared with let have global scope

B). Variables declared with let have function scope

C). Variables declared with let are block-scoped

D). Variables declared with let are hoisted

What happens if you try to reassign a value to a constant declared using const?

A). SyntaxError

B). TypeError

C). ReferenceError

D). No error, value is reassigned

What will be the output of the code above?

A). 30

B). 31

C). TypeError

D). Undefined