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

[EX Q]: People are born with _ kidneys.
[EX A]: two

[EX Q]: Diatoms look like _ shells that fit together.
[EX A]: two

[EX Q]: Any closed figure formed by _ or more line segments is called a polygon .
[EX A]:
three