ANSWER
Third option
Step-by-step explanation
We want to identify the graph that correctly describes the points.
The first quadrant on a coordinate grid is the quadrant located in the top right corner of the coordinate grid.
Also, we have that point B is located at (-1/2, 1) and C is a reflection of point B across the y-axis.
When a point is reflected across the y-axis, it changes as follows:
This implies that point C is located at:
Therefore, the graph that correctly describes the points is the third option.