Answer: The right answer is Seed drill.
Explanation: The first innovation made to improve the agricultural revolution was the Jethro Tull seed drill. Before the mentioned invention, the agricultural method used was largely inefficient and distributed irregularly the seeds. By the invention of a pioneer named Jethro Tull, the revolution began. Composed by a rotating cylinder with cutin grooves, which released the seed from the tank to the funnel. Then, the seeds were dropped into a channel that was dug by the machine beforehand and finally, the soil was covered by a harrow attached to the drill. By using this machine, farmers were capable to plant seeds in three rows at the same time, which helped increase yields and benefited the agrarian society greatly.