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Which of the following language supports lexical scoping?

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Which of the following language supports lexical scoping?

(a) Perl

(b) Python

(c) Common Lisp

(d) All of the mentioned

I had been asked this question by my college director while I was bunking the class.

My question is based upon Scoping Rules in section Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming

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Correct answer is (d) All of the mentioned

To explain: Lexical scoping in R has consequences beyond how free variables are looked up.

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