His endeavours proved fruitful.
A. justified
B. futile
C. efficient
D. productive
Answer: Option D
Solution(By Examveda Team)
Justified : having, done for, or marked by a good or legitimate reason.Futile : incapable of producing any useful result; pointless.
Efficient : (of a system or machine) achieving maximum productivity with minimum wasted effort or expense.
Productive : producing or able to produce large amounts of goods, crops, or other commodities.
Fruitful : producing good or helpful results; productive.
Synonym of Fruitful is Productive
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