Answer: Option (A)
Explanation: The graph that shows the water flow rate with respect to time about a distinct point in rivers and streams is called a hydrograph.
In case of a hydrograph, the peak precipitation rate shows the peak discharge. This means that due to a peak precipitation or rainfall in a particular area, the water discharging rate will subsequently increase. It is because of the gradual increase in surface water run off that would reach its maximum limit within 9-10 hours.
Higher precipitation leads to the higher discharge of water by the streams and river channel.
Thus the correct answer is option (A).