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

[EX Q]: Prokaryotes mean they have _ nucleus in which they store genetic material.
[EX A]: no

[EX Q]: Happiness is _ kinds of ice cream.
[EX A]: two

[EX Q]: Most pickup trucks have four sets of shock absorbers, _ for each wheel.
[EX A]:
one