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

[Q]: Sturgeons are shark-like in form but are unique in having _ rows of bony plates along the body.
[A]: five


[Q]: Birds begin dying of fowl cholera _ to nine days after exposed to the virus.
[A]: four


[Q]: Physicians often implant four or _ embryos.
[A]:
five