The correct answer is A. Delphi Technique.
The Delphi Technique is a qualitative forecasting method that uses a panel of experts to provide input on a particular issue. The experts are not brought together in person, but instead communicate with each other through a series of questionnaires and feedback rounds. This allows the experts to share their knowledge and insights, and to develop a consensus view on the issue.
The Delphi Technique is often used in situations where there is a high degree of uncertainty or where there is no clear consensus among experts. It can be a valuable tool for developing forecasts of future demand, as it can help to identify potential risks and opportunities.
The other options are incorrect because they are not qualitative forecasting methods. Group brainstorming is a qualitative problem-solving technique, while work study is a quantitative method of analyzing work methods and procedures.
Here is a brief explanation of each option:
- Delphi Technique: A qualitative forecasting method that uses a panel of experts to provide input on a particular issue. The experts are not brought together in person, but instead communicate with each other through a series of questionnaires and feedback rounds. This allows the experts to share their knowledge and insights, and to develop a consensus view on the issue.
- Group brainstorming: A qualitative problem-solving technique in which a group of people generate ideas in a free-flowing and spontaneous manner. The goal of brainstorming is to generate as many ideas as possible, without judgment or criticism.
- Work study: A quantitative method of analyzing work methods and procedures. Work study can be used to identify ways to improve efficiency and productivity.
- None of these: None of the other options are qualitative forecasting methods.