ridiculous
genuine
engineered
magnificent
Answer is Right!
Answer is Wrong!
The correct answer is B. Genuine.
A factitious thing is not genuine or real. It is made up or artificial. A genuine thing is real and not made up. It is authentic.
The other options are not antonyms of factitious.
A ridiculous thing is very silly or absurd. It is not to be taken seriously.
An engineered thing is designed and built by humans. It is not natural.
A magnificent thing is very impressive or grand. It is not ordinary or common.