UPSC NDA I and II 2020 General Ability Solved Paper

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PREPOSITIONS
DIRECTIONS (Qs. 31-40): Each item in this section has a sentence with a missing preposition. Select the correct preposition from the given options and mark your response on your Answer Sheet accordingly.
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Question : 32 of 150
 
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In extremely poor societies, children can be put to work _________ a young age and are therefore a source of income.
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