Answer: (Detailed Solution Below)
Option B: Land revenue
Detailed Solution:
The correct answer is “Land revenue”.
Todar Mal is best known for his land revenue reforms during the Mughal Empire under Akbar. He introduced a new system of land revenue known as zabt and a taxation method called dahshala. His revenue collection system, known as "Todarmal's Bandobast," was highly efficient and is still admired today.