Which statement describes the Potomac-Shenandoah watershed? Check all that apply.

It flows into the James River.
It includes part of West Virginia.
It is the northernmost watershed.
It is one of the largest watersheds.
It is a mixture of fresh and salt water.

the first and second are right

the fourth and fifth are wrong.

but I am not sure about the third one

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.