People in the past mainly worked in agriculture, whereas today there are significantly fewer people working in this (34) of the economy.Đoạn văn35/51Read the following passage and choose the best answer A, B, C, or D to fill in each gap. Write the answers on your answer sheet. People in the past mainly worked in agriculture, whereas today there are significantly fewer people working in this (34) of the economy.factorwayelementsectorGiải thíchD. sector