Which technique uses a series of questionnaires in such a way that the respondents finally reach a consensus about the topic and basically it uses expert opinion to help make decisions about practices, needs and goals?

Correct option is A

The correct answer is (a) The Delphi technique involves gathering input from a panel of experts through a series of questionnaires or surveys. Each round of questioning is designed to refine opinions and reach a consensus on a particular topic. This iterative process allows for the synthesis of expert opinions and helps in making informed decisions about practices, needs, and goals. It’s particularly useful when there is uncertainty or lack of clear data, as it leverages the collective wisdom of knowledgeable individuals.