Survey instruments are tools used to collect data from respondents in a structured manner. They can take various forms, including questionnaires, interviews, and online surveys. These instruments are designed to gather specific information, such as opinions, behaviors, or demographics, to help researchers analyze trends and make informed decisions. The design of survey instruments is crucial for obtaining reliable and valid results. Key elements include clear questions, appropriate response options, and a logical flow. Properly constructed survey instruments can enhance the quality of data collected, making them essential in fields like market research, social science, and public health.