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

[EX Q]: Dingoes live to _ or six years of age in the wild and fifteen years in captivity.
[EX A]: five

[EX Q]: Pelycosaurs are a paraphyletic group of _ primitive families of synapsids.
[EX A]: six

[EX Q]: Wolves can go at a steady trot for _ hours.
[EX A]:
eight