Step 1: Concept
Traditional Indian medicine (Ayurveda) uses vernacular names for botanical species.
Step 2: Meaning
"Punarnava" literally means "that which becomes new again," referring to its regenerative properties.
Step 3: Analysis
Boerhaavia diffusa is a herb used for its diuretic and hepatoprotective actions. Tulasi is Ocimum sanctum, and Ganneru is Nerium oleander.
Step 4: Conclusion
The common and Ayurvedic name for Boerhaavia diffusa is Punarnava.
Final Answer: (B)