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

Q: Chicks take _ years to develop full adult plumage.

A: five
****
Q: Mares normally give birth to their first foal when they are between _ and six years of.

A: three
****
Q: Tesla coils are extremely dangerous and have killed _ people.

A:
three
****