1. The document outlines a plan to adopt source triangulation as a research methodology for a thesis proposal. It discusses analyzing primary and secondary documents, conducting structured and unstructured interviews with key individuals, and comparing findings from different sources. 2. Source triangulation involves using multiple data sources to study a research question in order to increase confidence in findings. It can provide different perspectives and reveal unique insights. However, sources may be biased in the same way or have divergent validity threats. 3. The document recommends triangulating data sources, observers, theories, and methods to overcome weaknesses while also considering advantages and disadvantages when developing a research proposal.