What should come in place of the question mark (?) in

Which of the following is NOT a characteristic of the SJF (Shortest Job First) scheduling algorithm?      

Which data structure is used for implementing recursive function calls?

In Data Structures, which of the following algorithms uses the Divide and Conquer strategy?

The time complexity of building a heap from an unsorted array of n elements is:

What is the worst-case time complexity of QuickSort with a random pivot for sorting n distinct elements?

Which algorithm returns a minimum spanning tree (MST) and uses a priority queue to select the next edge connected to the growing tree?

Which algorithm is best suited for finding a Hamiltonian cycle in an undirected graph?       

Which of the following is shared by the thread of the same process.

Which of the following is a fundamental challenge in Natural Language Processing (NLP)?