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

Q: Bifocal lenses have _ distinct segments with different powers.

A: two
****
Q: Humans are bipeds who stand between _ to six feet in height when fully grown.

A: five
****
Q: Simultaneous infections can occur with _ or more tick-borne infections.

A:
two
****