It is B) 0.
A number line possesses several essential components. Toward the center, beyond is the foundation otherwise the starting point a.k.a the origin, that is 0. Whence can you master this? Okay, in the starting point, there was emptiness. I learned that someplace. Furthermore, the starting point of most thingies is zero. This involves the record at the commencement of a sport and so forth u can think of.
