In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: Coho usually live for _ years and grow rapidly in their final year.
[EX A]: three

[EX Q]: Miniature cattle are classified in _ categories as measured by height at the hip.
[EX A]: three

[EX Q]: Economists divide resources into _ basic categories of land, labor, capital, and management.
[EX A]:
four