It would be using other people’s ideas without giving them credit.
Similes compare two things. Because clowns are considered by most to be very funny, the object would also have to be something funny.
Therefore you could say...
A clown is as funny as a medieval joker.
A clown is as funny as a cat barking like a dog.
A clown is as funny as a comedy movie.
B.) Antonyms
Because a synonym of withdrawn is uncommunicative
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Answer:
B
Explanation:
Because he vividly recalled the happiness of his childhood.