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

[EX Q]: Bilinear interpolation uses a weighted average of the _ nearest pixels.
[EX A]: four

[EX Q]: Ants display _ rather distinct patterns of nest establishment.
[EX A]: two

[EX Q]: Most roots require from three to _ weeks to dry sufficiently to be safe.
[EX A]:
six