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 from 19 to 20.
Juan Manuel Santos was awarded the Nobel Peace Prize 2016 for his resolute efforts to bring the country’s more than 50-year-long civil war to an end.
A.sure
B.certain
C.determined
D.original