A. JavaScript is a function that is enclosed with references to its inner function scope
B. JavaScript is a function that is enclosed with references to its lexical environment
C. JavaScript is a function that is enclosed with the object to its inner function scope
D. None of the mentioned

Solution

B. JavaScript is a function that is enclosed with references to its lexical environment

Explanation

A closure is a function that is enclosed with references to its lexical environment. A closure allows an inner function to access the scope of an outside function. Closures are formed every time a function is created in JavaScript, during function creation time.