Answer: Choice B)
As n increases, ns gets closer to 2pi*r
Note: choice D may look similar as h looks like n from a distant glance.
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Step-by-step explanation:
The idea is that if we increase the number of sides of the polygon, then the perimeter of the polygon will slowly approach the perimeter of the circle (aka circumference). This is because the polygon itself is slowly becoming a circle, in a way, as n heads off to infinity. The polygon will never actually become the circle but it will get closer and closer to it.
n*s = perimeter of the polygon as there are n sides of length 's'
2pi*r = circumference of the circle
Changing s, r, or h will not affect things in terms of the polygon getting closer to the circle. The only variable that affects that is n