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

Q: Economists divide resources into _ basic categories of land, labor, capital, and management.

A: four
****
Q: Weasels reaching _ to six years are regarded as fully mature.

A: five
****
Q: Sea cucumbers have between _ and thirty such tentacles, depending on the species.

A:
ten
****