The document discusses survey questionnaires. A questionnaire is a form used to collect data in a survey by asking respondents questions. It serves four purposes: to collect appropriate data, make data comparable and analyzable, minimize bias, and make questions engaging. The document provides guidance on developing a questionnaire, including deciding what information is needed, defining the target population, formulating questions to answer research questions, organizing questions logically, consulting experts, piloting the questionnaire, and adhering to ethical standards. It also discusses open-ended versus closed-ended questions and examples of each.