Final answer:
Secondary data can be collected through methods such as researching on the Internet, conducting interviews, and archival research.
Step-by-step explanation:
Secondary data can be collected through various methods, including researching on the Internet. This involves gathering information from existing sources such as online databases, articles, and reports. Another way to collect secondary data is by conducting interviews with professionals or individuals who have direct experience with the research topic. By consulting and interviewing experts, you can gain authoritative perspectives and insights. Archival research is another method of collecting secondary data, which involves using existing records and data collected by others.