which of the following is described as a process by which a problem is divided into sub problems is divided into subproblems which are recursively solved, then combined for a final solution

The process described in the above statement is known as "divide and conquer."

The process that is described is called "divide and conquer."

The process you are describing is known as "Divide and Conquer." In this problem-solving technique, a complex problem is divided into smaller, more manageable subproblems. These subproblems are then solved individually, and their solutions are combined to obtain a final solution to the original problem. This approach is often used in algorithms and problem-solving strategies to improve efficiency and make the overall problem more solvable.