Select the INCORRECTLY spelt word.

Correct option is D

Option (d) is the incorrectly spelt word.
Correct spelling is: “Scalable” – capable of being expanded or adapted to greater size or volume. (विकसित किया जा सकने योग्य)
Example: This business model is easily scalable with little extra cost.
Meanings of the other options:
· (a) Effervescent – bubbly or lively (उत्साही)
· (b) Unorganised – not arranged systematically (अव्यवस्थित)
· (c) Efficient – working effectively without waste (कुशल)
Information Booster:
Words ending in “-able” follow regular spelling patterns. “Scalable” is correct; "scaleable" is a common but incorrect variant.