Choose the incorrectly spelt word.

Correct option is D

Option (d) is the incorrectly spelt word.
Correct spelling is: Evolution – The gradual development of something over a period. (हिंदी अर्थ: विकास, क्रमिक विकास)
Example: Darwin's theory of evolution changed the way we look at biology.
Meanings of all the given options:
· (a) Construction: the action of building something (हिंदी अर्थ: निर्माण)
· (b) Streamlining: improving efficiency by simplifying processes (हिंदी अर्थ: सरलीकरण)
· (c) Barbaric: savagely cruel or exceedingly brutal (हिंदी अर्थ: बर्बर)