If ‘book’ is called ‘watch’, ‘watch’ is called ‘bag’, ‘bag’ is called ‘dictionary’ and ‘dictionary’ is called ‘window’, which is used to carry books ?

The correct answer is (d).

In the question, the words “book”, “watch”, “bag”, “dictionary”, and “window” are all being used in a different way than their usual meaning. “Book” is being used to mean “watch”, “watch” is being used to mean “bag”, “bag” is being used to mean “dictionary”, and “dictionary” is being used to mean “window”.

So, if “book” is called “watch”, then “watch” is called “bag”. This means that a “bag” is used to carry books.

The other options are incorrect because they do not make sense in the context of the question.

(a) “Window” is not used to carry books.
(b) “Watch” is not used to carry books.
(c) “Dictionary” is not used to carry books.