TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Induction also operates early in development, even before the _ layered embryo forms.

SOLUTION: three

PROBLEM: Unipolar motors have _ coils and are likely to have five or six wires attached.

SOLUTION: four

PROBLEM: Adult muskrats average _ foot in length and three pounds in weight.

SOLUTION:
one