Final answer:
The Unified Medical Language System is responsible for the integration of biomedical concepts from many sources.
Step-by-step explanation:
The integration of biomedical concepts from many sources is performed by the Unified Medical Language System (UMLS). Other options provided, such as the Healthcare Cost and Utilization Project (HCUP) by the Agency for Healthcare Research and Quality, Medical Literature, Analysis, and Retrieval System Online (MEDLINE), and the agency itself, serve different purposes. HCUP collects, analyzes, and disseminates national data on hospital care. MEDLINE is a database for medical literature, and the Agency for Healthcare Research and Quality focuses on improving the quality and safety of healthcare. However, it is UMLS that specifically integrates biomedical concepts from various sources.