TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Ticks mature in _ stages, moving from egg to larva and nymph to adult.

SOLUTION: four

PROBLEM: Interstate commerce is commerce conducted in at least _ states.

SOLUTION: two

PROBLEM: Lions reach full maturity at around _ years of age.

SOLUTION:
six