Respuesta :

The smallest x coordinate means that we're looking for the leftmost point.
Visually, we can tell that it's point B.
To prove it, we know the x coordinate for B is 1. 1 is less than all other x coordinates (2, 5, and 6)

Final answer: B
A(2, 1)
B(1, 3)
С(5, 5)
D(6, 3)

point B(1, 3) has the smallest x-coordinate [x=1].