Answer:
A)Draw an arc above and below the line.
Explanation:
For drawing perpendicular bisector for any line segment we have the following steps in the same order.
i) Extend the width of the compass to approximately 2/3 of the line segment,
ii) Draw an arc above and below the line.
iii) Place the compass' point on the other end of the line segment.
iv) Draw an arc above and below the line of the same width taken before
v) Join the intersection of arcs above and below the line.
Hence our answer would be option i.