Select the most appropriate option to fill in blank number 1.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. for.
Context: The sentence emphasizes the purpose of speaking as a tool used in human communication, so the preposition “for” correctly conveys this relationship.
Meaning of the options:
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For – indicates purpose or use, correct in this context.
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At – indicates location or direction, incorrect here.
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With – indicates accompaniment, does not fit.
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On – indicates position or topic, not suitable here.
Correct word: For, because speaking is a tool for human communication.
Final Sentence: Speaking is a powerful tool for human communication.
Hence, the chosen option is correct.