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

[EX Q]: Puppies can start vaccinations at _ weeks.
[EX A]: six

[EX Q]: B cells can receive stimulation in _ ways.
[EX A]: two

[EX Q]: Most people develop antibodies within _ months and some can take up to six months.
[EX A]:
three