Mark the letter A, B, C, or D on you...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.
When he won the first prize, he realised that this was the highest attainment of his life.

A. accomplishment

B. task

C. shock

D. surprise