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

[Q]: Cubs emerge from the den when they are four to _ months old.
[A]: six


[Q]: Ticks mature in _ stages, moving from egg to larva and nymph to adult.
[A]: four


[Q]: Vitreous body comprises _ fifths of the globe.
[A]:
four