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

[EX Q]: Beavers have an average of _ young once a year.
[EX A]: four

[EX Q]: Elk are more than _ times the size of deer.
[EX A]: three

[EX Q]: Female terrapins store sperm and thus can produce fertilized eggs up to _ years after mating.
[EX A]:
four