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

Q: Most cats have only four to _ toes per paw, depending on whether it is the front or back paw.

A: five
****
Q: Most turbines have either _ or three blades.

A: two
****
Q: Today there are _ animals classified as unicellular.

A:
no
****