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

[EX Q]: Sin has _ effects on every person's life.
[EX A]: two

[EX Q]: Mares generally give birth to one young every _ years.
[EX A]: three

[EX Q]: Nymphs feed and mature through _ instars in about six to eight weeks.
[EX A]:
five