Select the option that can be used as a one-word substitute for the given group of words.
A person who is mentally ill
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Lunatic.
Correct word: Lunatic
Meaning: A person who is mentally ill or shows extremely foolish or unpredictable behavior.
Example: In old times, people wrongly called those with mental disorders lunatics instead of giving them proper medical help.
Meaning of the other words:
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Mercenary: a person who works only for money, especially a soldier hired to fight for another country.
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Psychiatrist: a medical doctor who diagnoses and treats mental illnesses.
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Psychologist: a professional who studies the human mind and behavior but does not prescribe medicine.
Hence, the chosen option will be correct.