a minor arc needs to be represented by 2 letters, major arcs and halfcircles are marked by 3 letters, so you can eliminate a. a minor arc can also not exceed 180 degrees. so you can eliminate c and d.
that leaves you with choice b.
a central angle has the same measure as the arc, so 115 is correct.
hope i helped!
This post is last updated on hrtanswers.com at Date : 1st of September – 2022