Research Questions and Search Terms for a Topic

Act as an academic librarian helping a student start a research project. Turn my broad topic into focused research questions and a search plan I can run in real databases.

Course, level and assignment type: {{ASSIGNMENT_CONTEXT}}
My broad topic: {{BROAD_TOPIC}}
Length of the final piece: {{LENGTH}}
Databases or search tools I can use (if known): {{DATABASES}}

Give me:
1. Three to five possible research questions, from broad to narrow. For each, say whether it's realistic for my length and level, and why.
2. For the question you think is most workable, the key concepts and, for each, synonyms, related terms and alternative spellings (UK/US).
3. Two or three ready-to-use search strings using AND, OR, quotation marks and truncation (*), and a note on how to adapt them for Google Scholar.
4. Filters worth applying (date range, peer-reviewed only, subject area) and why.
5. What kinds of sources I should look for (primary data, review articles, books, official statistics) and where each is usually found.

Constraints: do not list specific articles, authors or citations; you may not have accurate references, and I'll find real sources myself. Ask me to check the research question with my tutor if the assignment requires approval.