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

[EX Q]: Monarch caterpillars have _ pairs of tentacles.
[EX A]: two

[EX Q]: Territorial groups consist of one supermale or terminal male and _ to three females.
[EX A]: one

[EX Q]: Reverse osmosis uses _ to ten gallons of water to produce one gallon of drinking water.
[EX A]:
three