Answer:
correct option is B. The North Star: A second magnitude star
Explanation:
we know that different different star are at different different coordinates at different time of a year
and in the night sky we use planisphere to locate the star and this give us complete idea of location
and we know that in foreground there is a hole and by this we can see background and location of star
and planimetric representation of the celestial sphere in Background of that instrument and we know at centre it is at polar and star is nearest to our north celestial pole
and this star is not the brightest star in the sky, it is 50th of all bright stars
so here correct option is B. The North Star: A second magnitude star
