A true patriot can die ____ his country. (১৮তম শিক্ষক নিবন্ধন স্কুল: ২০২৪)

The correct answer is option (a) "for." The correct collocation is 'die for' — meaning to sacrifice one's life for a cause, person, or country. Example: 'Soldiers die for their nation.' / 'He died for his beliefs.' ✗ 'Die of' = to die as a result of a disease or condition (e.g., die of cancer). ✗ 'Die in' = to die during an event (e.g., die in a battle). Source: Oxford Collocations Dictionary.