In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
--------
Question: Adult muskrats average one foot in length and _ pounds in weight.

Answer: three


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

Answer: four


Question: Color blindness is fairly common, affecting about _ percent of all humans.

Answer:
nine