Discussion
The __________ with respect to a given outlet point; represents a geophysical area whose surface runoff passes out through the given outlet point only.
Answer: A
The area described is a Watershed.
A watershed (catchment) is defined with respect to an outlet point: it is the area of land whose surface runoff all drains to and leaves through that single point, bounded by the ridge line that divides it from neighbouring watersheds. This makes it the natural unit for soil and water conservation planning.
A command area is the land that an irrigation system can serve, streams are the channels that carry the flow, and canopy cover is the vegetation over the soil. None of them is defined by drainage to an outlet.
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