Which branch focuses on using stem cells for research?

• A. Gene Therapy
• B. Stem Cell Research
• C. Urinary Tract Infection
• D. Active Listening

Answer: (B)

The concept tested is identifying which field centers on studying stem cells as the main subject of investigation. Stem Cell Research is the branch that fits because it focuses on the biology of stem cells—their ability to renew themselves and differentiate into various cell types—and on using those cells to model diseases, test drugs, and develop regenerative therapies. This is distinct from gene therapy, which aims to treat or prevent disease by delivering genetic material; urinary tract infection, which is a medical condition rather than a research field; and active listening, which is a communication skill. So the best answer is Stem Cell Research because it specifically centers on using and studying stem cells in research contexts.