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

[Q]: Cancer can start in any of the _ sections or where the colon ends in the rectum.
[A]: four

[Q]: Degradation is a result of _ simultaneous processes.
[A]: two

[Q]: Leopard geckos reach sexual maturity at the age of _ to three years .
[A]:
one