Step 1: Understanding the question.
The question is asking which of the listed rivers has the highest discharge or flow rate.
Step 2: Analyzing the options.
(A) यमुना: Yamuna is a significant river, but it does not have the highest discharge compared to others listed here.
(B) सतलज: Sutlej is a large river, but its discharge is lower than the Godavari.
(C) गोदावरी: Correct — The Godavari is the second-largest river in India and has one of the highest discharges.
(D) सोन: The Son River is not as large or fast-flowing as the Godavari.
Step 3: Conclusion.
The correct answer is (C) गोदावरी, as it has the highest discharge rate among the listed rivers.