Under which conditions is it most beneficial to use a heuristic approach to solve a problem?

When the problem cannot be solved in a reasonable time and an approximate solution is acceptable

Explanation:

A heuristic is considered to be a mental shortcut which people use to solve problems by making judgement quickly and sometimes efficiently. It is a problem solving technique that makes use of a practical method that may or may not be optimal. Such technique is used when a problem is almost impossible to be solved within a reasonable time and a solution that closely solves the problem is acceptable.

C.

Explanation:

A heuristic approach is an approach to problem solving that focuses on using the most practical method to solve the problem, which may not always be the most optimal or perfect solution, but is enough to meet the goal. Therefore it can be said that the most beneficial condition for using a heuristic approach to solve a problem would be when the problem cannot be solved in a reasonable time and an approximate solution is acceptable.