Data acquisition techniques refer to the methods used to collect and measure data from various sources. These techniques can include surveys, interviews, and observations, which gather qualitative data, as well as sensors and automated systems that collect quantitative data. The choice of technique often depends on the research objectives and the type of data needed. Another common method is data scraping, which involves extracting information from websites or databases. Additionally, remote sensing uses satellite or aerial imagery to gather data about the Earth's surface. Each technique has its advantages and limitations, making it essential to select the most appropriate method for the specific research context.