Step 1: Concept
The Cartagena Protocol on Biosafety is an international agreement which aims to ensure the safe handling, transport, and use of living modified organisms (LMOs).
Step 2: Meaning
LMOs are more commonly referred to as genetically modified organisms (GMOs).
Step 3: Analysis
The protocol focuses specifically on transboundary movements of GMOs that may have adverse effects on biological diversity and human health.
Step 4: Conclusion
It is the primary international regulatory framework for GMO trade.
Final Answer: (B)