Survey instruments are tools used to collect data from individuals or groups. They can take various forms, such as questionnaires, interviews, or online surveys. These instruments are designed to gather specific information, often to understand opinions, behaviors, or demographics of a population. The design of a survey instrument is crucial for obtaining reliable and valid results. It includes clear questions and response options, ensuring that participants can easily understand and answer them. Properly constructed survey instruments help researchers analyze data effectively and draw meaningful conclusions about the target group or topic, such as public health or market research.