Difficulty: Easy
Correct Answer: Efficient
Explanation:
Given data
Concept/Approach
Use standard British/International English spellings as accepted in competitive exams.
Step-by-step reasoning
Efficient — 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/Alternative
All reputable dictionaries list ‘‘efficient’’ with the suffix ‘‘-cient’’ and double ‘‘f’’ pattern.
Common pitfalls
Missing double consonants in derivatives (betterment) or dropping the ‘‘e’’ in past forms (employed).
Final Answer
The correctly spelled word is Efficient.
Discussion & Comments