Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning.Câu hỏiVolunteering makes a significant contribution to the economy all around the world. A. A contribution from volunteering to the economy has been significantly made. B. The economy all around the world benefits significantly from volunteering. C. Volunteers around the world have made significant contribution to the economy. D. Volunteering has significantly contributed to the world economy in all sectors.