The first statement "a half-circle extending from your horizon due north, through your zenith, to your horizon due south" is the correct statement in respect of meridians.
Meridians are the imaginary lines between North Pole and South Pole. This is a geographical term. It is usually drawn on maps to show the position of a place. Meridian is like a great circle that passes through the poles and zenith.
These are the imaginary lines that run vertically i.e. up and down along the two poles. These lines are also used to measure the timing in a particular place.
Since it tells the location of a place then it is natural to know the timing of that lace since we can find out how much time it takes to travel from one place to another. These two meridians meet at poles.
Thus, the correct statement is meridian is "a half-circle extending from your horizon due north, through your zenith, to your horizon due south".
To know more about meridian, refer: https://brainly.com/question/28342357
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