Answer:
Set - C
Step-by-step explanation:
In the given 4 sets we will analyze the data one by one.
Set A - The given data in this set is non-symmetric and randomly arranged.
Set B - Data are arranged in increasing order but non-symmetric.
Set C - In this set all numbers given have an increase of 5. and arranged in increasing order. Therefore, the given set is symmetric.
Set D - This data is non-symmetric.
Answer would be Set C.