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

[EX Q]: Reds can benefit from seven to _ years' aging .
[EX A]: nine

[EX Q]: Melanocytes are dendritic and are distributed roughly _ per six basal cells.
[EX A]: one

[EX Q]: Soybeans are the only vegetable that contain complete protein with all _ amino acids.
[EX A]:
eight