Which of the following is true about the time complexity

Solution

Correct Option: Merge Sort (C) has a time complexity of O(n log n) in both the best and worst cases due to its divide-and-conquer approach, where the list is recursively split and merged. Why Other Options Are Wrong: A) O(n), O(n^2): Merge Sort does not have a quadratic time complexity in the worst case, nor does it achieve linear time in the best case. B) O(log n), O(log n): This is incorrect as merge sort deals with linear elements and requires O(n log n) time due to both sorting and merging. D) O(n), O(n log n): While some algorithms achieve linear time in the best case, Merge Sort consistently performs at O(n log n). E) O(n^2), O(n^2): This complexity is associated with algorithms like bubble sort in the worst case, not Merge Sort.