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

[EX Q]: Cormorants are monogamous and breed in colonies of up to _ thousand pairs.
[EX A]: three

[EX Q]: Some barnacles can feed in _ modes.
[EX A]: two

[EX Q]: Nurseries provide care for children under _ years old.
[EX A]:
five