The correct option is B. There are two basic types of interview, structured and unstructured interview. In unstructured interview, the conversation is allowed to flow freely. A structured interview refers to a fixed format form of interview in which questions are prepared and arranged in certain order prior to the interview and all the respondents are asked the same questions in the same order. This type of interview provides required precision that is required in certain situations. Structured interview is usually used as a quantitative research method in survey research. <span />
The most striking characteristic of a structured interview is that it has a planned set of questions. And not just any questions, but questions asked in exactly the same order.