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

[EX Q]: Involuntary manslaughter carries up to _ years in prison.
[EX A]: five

[EX Q]: Some manatees have _ or four nails on the tip of each flipper.
[EX A]: three

[EX Q]: Ocular dryness responds to the use of artificial tears applied every one to _ hours.
[EX A]:
three