Which is the brightest star in the night sky visible to us?

Correct option is B

The brightest star in the night sky visible to us is Sirius. Often referred to as the "Dog Star," Sirius is the brightest star in Earth's night sky, even outshining our own solar system's star, the Sun (when the Sun is not visible at night).
· Corner Star of Ursa Major: This refers to Dubhe, the brightest star in the constellation Ursa Major (Great Bear). While bright within the constellation, it's not the brightest star overall.
· Pole Star: Polaris, the North Star, is a relatively faint star but holds significance due to its position near the North Celestial Pole, making it a reliable reference point for navigation.
· Middle Star of Middle Three Stars of Orion: This refers to Alnilam, part of Orion's Belt. While prominent in the constellation Orion, Sirius surpasses it in brightness.