Answer:
The correct option is;
B. To show you what the final line will look like
Step-by-step explanation:
The rubber band line are dashed lines that come up during the process of drawing using CAD. The rubber band lines are attached to the first point of the start of the drawing of a line and follow the cursor when drawing a line, polygon ellipses or circles that are defined by a radius or center diameter such that it shows the appearance of the final object before the drawing is completed.