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

[EX Q]: Wild alfalfa is fairly drought resistant, with roots going down _ feet.
[EX A]: ten

[EX Q]: Cubs stay with their mothers for up to _ years.
[EX A]: three

[EX Q]: Young roosters begin to show colored feathers on their breasts and necks at _ weeks.
[EX A]:
eight