The correct answer is A. calm.
A passionate person is someone who is very enthusiastic about something. They may be very excited, intense, or even obsessed with their interests. On the other hand, a calm person is someone who is relaxed and not
easily upset. They may be slow to anger and easygoing.The other options are not antonyms of passionate.
B. arrogant: An arrogant person is someone who thinks they are better than everyone else. They may be boastful, conceited, or even condescending.
C. sure: A sure person is someone who is confident and certain about something. They may be decisive, resolute, or even unwavering.
D. fervent: A fervent person is someone who is very enthusiastic and passionate about something. They may be intense, zealous, or even fanatical.
In conclusion, the correct answer to the question “Antonym of PASSIONATE” is A. calm.