Correct option is D
The unit of discharge is cubic meter per second (m³/s). Discharge refers to the flow rate of a fluid, typically water, through a given cross-section over time. In the context of rivers, streams, or pipelines, it indicates the volume of water passing a specific point per unit of time.
It represents the volume of fluid flowing per second. For example, in rivers, it quantifies how much water flows over a specific section in one second.
This unit is crucial in hydrology, environmental engineering, and fluid dynamics for managing water resources.
Additional Information:
Meter (m): A unit of length.
Square meter (m²): A unit of area, but used to measure the cross-sectional area of a flow.
Cubic meter (m³): A unit of volume, but discharge is concerned with the volume per time.