Choose the correct one word 'A study of the human race.'

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One who makes an active effort to promote human welfare

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 'Converting waste into reusable material.'

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Place where two or more rivers meet

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A place where government records are kept

Select the option that can be used as a one-word substitute for the given group of words. One who feeds on human flesh

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 Unable to speak distinctly or express oneself clearly

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The newspaper dedicated a report giving the news of the death and details about the life of the deceased.