Fill in the blank with the most appropriate ANTONYM of the word given in brackets.
In this (endeavour) _________, he met with vigorous opponents.

Correct option is B

The correct antonym of the given word is (b) inactivity.
Endeavour: a serious attempt or effort to do something. (Hindi: प्रयास)
Example: His endeavour to reform education was appreciated.
Inactivity: the state of being idle or not doing anything. (Hindi: निष्क्रियता)
Example: Prolonged inactivity may lead to boredom.
Synonyms of Endeavour: effort, attempt, venture.
Antonyms: inactivity, laziness, idleness.
Meanings of other options:
· (a) Business – occupation (व्यवसाय)
· (c) Force – strength (बल)
· (d) Design – plan or blueprint (डिज़ाइन)