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

[Q]: Miniature cattle are classified in _ categories as measured by height at the hip.
[A]: three


[Q]: Most orangutans are _ to five feet long, some can reach a length of six feet.
[A]: four


[Q]: Premolars have one, two, and sometimes _ canals.
[A]:
three