Select the INCORRECTLY spelt word in the options given below.

Correct option is A

Option (a) is the incorrectly spelt word.
Correct spelling is: "Enthusiastic," meaning showing intense enjoyment, interest, or approval (उत्साही).
Example: She was enthusiastic about her new project.
Meanings of all the given options:
· Liquidity: the ability to be easily converted to cash (तरलता)
· Pioneer: a person who is among the first to explore or settle a new area (अग्रणी)
· Phenomenon: a fact or event observed in the natural or human world (घटना)