Final answer:
Robbin's main research methodology was surveys and interviews with stakeholders, which are methods suitable for detailed and specific insight gathering in social research(option d).
Step-by-step explanation:
The main methodology of Robbin's study was surveys and interviews with stakeholders(option d).
In the field of social research, choosing the right methodology is crucial to effectively address the research question. Robbin's methodology involved in-depth interviews, focus groups, and the analysis of content sources to gather quantitative data. These methods are typically used to collect a large amount of detailed information from participants and are well-suited for studies targeting specific population samples or stakeholders with particular insights or experiences.