Correct Answer & Explanation
Option C
• 'Fantastic' means extraordinarily good, imaginative, or marvellous (বাংলা অর্থ: অদ্ভুত, চমৎকার, অসাধারণ).
• 'Marvellous' means causing wonder or extraordinarily good, making it the appropriate synonym.
• 'Ordinary' (সাধারণ), 'Conventional' (প্রথাগত), and 'Realistic' (বাস্তবসম্মত) are antonyms.