Answer:
Option 4 is the right answer.
Explanation:
To construct a square in a circle following are the steps to be done.
1) A line is to be drawn passing through center of the circle and touching the circle on two different points.
2) Then we draw a perpendicular to this line passing through the center and touching the circle on two different points.
3) Now we join these points on the circle.
Therefore fourth option is the not the step to construct a square inscribed in a circle.