Correct option is A
Option (a) is the correctly spelt word.
Correct spelling is: “Indispensable” – meaning something absolutely necessary or essential. (अत्यावश्यक, अनिवार्य)
Example: A dictionary is indispensable for learning new vocabulary.
The word
"indispensable" is an
Adjective
Usage in sentence (as adjective):
·
Her leadership skills make her an indispensable member of the team.