किसी लक्ष्य को प्राप्त करने के लिए चरण-दर-चरण निर्धारित विधि को ________ कहा जाता है।

Which of the following hinders the process of effective problem solving?

Ravi repairs appliances by testing hypotheses about the cause of the malfunction based on his experiences with the symptoms. He uses ______.