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

[EX Q]: Sunlight causes skin cancers in _ ways.
[EX A]: two

[EX Q]: Females reach sexual maturity around four to _ year-olds.
[EX A]: five

[EX Q]: Orangutans spend up to _ hours a day eating or foraging for food.
[EX A]:
six