Select the most appropriate option to fill in blank number 5.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. sanitation.
Context: We need a word referring to providing basic facilities related to cleanliness.
Analysis of the given options:
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Sanitation → cleanliness, hygiene
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Refinement → improvement
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Purification → cleaning, removing impurities
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Contamination → making dirty
Correct word: Sanitation
Reason: Sanitation facilities are basic cleanliness facilities.
Hence, the chosen option is correct.