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

[EX Q]: Most litters have two to _ kittens.
[EX A]: four

[EX Q]: Most women have _ problems getting pregnant with a retroverted uterus.
[EX A]: no

[EX Q]: Aridity is controlled by _ climatic anomalies.
[EX A]:
three