Difficulty: Easy
Correct Answer: Efficient
Explanation:
Given data
Concept/ApproachUse standard British/International English spellings as accepted in competitive exams.
Step-by-step reasoningEfficient — correct spelling (meaning: effective; performing well with minimal waste).‘‘Treatmeant’’ — incorrect; correct form is ‘‘Treatment’’ (…ment ending).‘‘Beterment’’ — incorrect; correct is ‘‘Betterment’’ (double ‘‘t’’).‘‘Employd’’ — incorrect; correct is ‘‘Employed’’ (…ed past participle).
Verification/AlternativeAll reputable dictionaries list ‘‘efficient’’ with the suffix ‘‘-cient’’ and double ‘‘f’’ pattern.
Common pitfallsMissing double consonants in derivatives (betterment) or dropping the ‘‘e’’ in past forms (employed).
Final AnswerThe correctly spelled word is Efficient.
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