How is True North depicted in a Declination diagram?

In a declination diagram, True North is depicted as a line that typically has a star at the end of it. This representation makes it visually distinct and indicates the direction of True North as opposed to Magnetic North. The star symbolizes the geographic North Pole, allowing users to easily identify and adjust for declination when navigating. This visual cue is crucial for ensuring accurate navigation, particularly when considering the differences between True North, Magnetic North, and Grid North. The other choices do not accurately represent how True North is depicted in this context, making the line with a star the most clear and informative representation.