The correct answer is D. Fool.
A “nincompoop” is a foolish or stupid person. A “joker” is a person who tells jokes, or a person who is playful or mischievous. A “trader” is a person who buys and sells goods or services. A “magician” is a person who performs tricks that seem impossible.
Of the four options, “fool” is the closest synonym for “nincompoop”. A fool is a person who is foolish or stupid, while a joker is a person who tells jokes, or a person who is playful or mischievous. A trader is a person who buys and sells goods or services, while a magician is a person who performs tricks that seem impossible.
In conclusion, the correct answer to the question “Synonym of NINCOMPOOP” is D. Fool.