Final answer:
The subject of this question is Social Studies and it discusses the use of internal information sources in this field.
Step-by-step explanation:
The subject of this question is Social Studies.
When it states that it employs only internal information sources, it means that the information used is generated from within the organization or institution itself, such as personal communications or data collected by researchers through in-depth interviews and analysis of content sources.
Examples of internal data sources in Social Studies include personal interviews with historical figures, letters written by political leaders, or qualitative analysis of speeches and writings of key individuals.