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

[Q]: Essential oils have a non-toxic, residual effect of up to five months from just _ application.
[A]: one


[Q]: Ospreys reach sexual maturity between _ and five years of age.
[A]: three


[Q]: Cats have five toes on their front paws, but only _ touch the ground when walking.
[A]:
four