He became a politician.' - Here the word 'politician' is used as-

A object

B subject

C adverb

D complement

Correct Answer: Option D

Verb - এর অর্থ সম্পূর্ণ করতে verb - এর পর যে word ব্যবহৃত হয় তা complement । প্রণােক্ত বাক্যে became - এর complement হলাে a politician ।