TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Some manatees have _ or four nails on the tip of each flipper.

SOLUTION: three

PROBLEM: Hoof balance is _ dimensional geometry.

SOLUTION: four

PROBLEM: Goats have all _ sets of permanent teeth usually by four years of age.

SOLUTION:
four