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

[EX Q]: Electric vehicles have _ tailpipe emissions.
[EX A]: zero

[EX Q]: Domestic violence occurs in _ in four families in Australia.
[EX A]: one

[EX Q]: Aspiration pneumonia includes _ syndromes based on the nature of the inoculum.
[EX A]:
three