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

[EX Q]: Tomatoes require about six to _ weeks from seeding until they reach transplant size.
[EX A]: eight

[EX Q]: Death usually occurs by five to _ years of life due to pneumonia or other infections.
[EX A]: eight

[EX Q]: Polarization can also help separate the _ types of fluctuations.
[EX A]:
three