How were the fields used in a village that followed the three-field system?
One field sown and one left fallow each year, with the two exchanging their roles the following year
All three fields sown every single year, with none of them rested
One field sown each year while the other two were kept permanently out of use
One field sown in autumn, one sown in spring and one left fallow, changing round each year✓Correct answer
Explanation
Splitting the arable into three parts allowed two of them to carry a crop each year while the third rested, and rotating which part rested meant no piece of ground was either exhausted or wasted. The older two-part arrangement is the commonest wrong pick, because it also rests land, but it leaves half the arable idle every year instead of only a third of it.