Though he tried hard, he failed. (Compound)

A He tried and failed

B In spite of his trying hard, he failed

C He tried hard but failed

D But for his trying hard, he failed

Correct Answer: Option C

simple sentence এ inspite of বা despite থাকলে তার complex sentence এ though বা although এবং compound sentence এ but ব্যবহৃত হবে।