The correct answer is C. State Bank of India.
State Bank of India (SBI) is the largest state-owned banking and financial services company in India. It is the largest bank in India by assets, deposits, loans, and branches. SBI has a network of over 24,000 branches and 60,000 ATMs in India and over 200 branches in 36 countries.
ICICI Bank is the second largest private sector bank in India. It has a network of over 5,000 branches and 14,000 ATMs in India and over 100 branches in 19 countries.
HDFC Bank is the third largest private sector bank in India. It has a network of over 4,000 branches and 12,000 ATMs in India and over 100 branches in 18 countries.
State Bank of Patiala is a regional rural bank in India. It has a network of over 1,000 branches in India.
SBI has the maximum number of branches because it is the largest bank in India. It has a network of over 24,000 branches and 60,000 ATMs in India and over 200 branches in 36 countries.