Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction
A professor of economy and history at our university developed a new theory of the relationship between historical events and financial crises
A: between
B: financial crises
C: developed
D: economy
Đáp án là D
=> economy ---> economics . economy: nền kinh tế, còn economics: môn kinh tế