Final answer:
The corn crop had an extremely high yield during the 1995 annual period, likely due to converging prices of wheat and corn.
Step-by-step explanation:
The question is about the extremely high yield of the corn crop during the 1995 annual period. Corn typically yields two to three times as many bushels per acre as wheat, and there has been a significant increase in bushels of corn in North Dakota. This increase in corn acreage is likely due to the converging prices of wheat and corn, where the price difference between the two crops has narrowed, making it more profitable to produce higher yield per acre of corn.