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

Q: Chlorine is manufactured in _ ways.

A: two
****
Q: Rheas are brownish instead of black like the ostrich and have _ toes instead of two.

A: three
****
Q: Many babies get pimples on their face, scalp, and chest at _ to six weeks of age.

A:
three
****