WHAT IS THE MAIN TOPIC OF THE PASSAGE

46. - BT LUYEN UNIT 8 1
BT LUYEN UNIT 8 1
46. What is the main topic of the passage? A. The need for agricultural advances to help feed a growing population. B. The development of safer machines demanded by the labour movement. C. Machinery that contributed to the agricultural revolution. D. New Jersey as a leader in the agricultural revolution.