Final answer:
Adut and AKot planted maize, which was developed in central Mexico around nine thousand years ago and is native to the New World.
Step-by-step explanation:
Based on the reference material provided, crops such as wheat and barley are native to the region known as the Fertile Crescent, and they were some of the first grains to be domesticated by humans about twelve thousand years ago. Maize, which is another term for corn, was developed around nine thousand years ago in central Mexico, which is part of the New World. Therefore, considering that both Adut and AKot are planting a staple cereal grain in early April, and drawing on the historical origin of these crops, Adut and AKot planted maize (c).