C..............................................................
2- 54:81, 54/81
3- 0:101, 0/101
4- 13.5:43.8, 13.5/43.8
Answer: The answer you selected PS is correct.
Step-by-step explanation: A minor arc is a arc that is less than or equal to 180 degrees. PS looks to be exactly 180 degrees or at least close to it.