The figure below shown a circle with segment AB as its diameter. The center of the circle is NOT know. A square needs to be inscribed in the circle with A and B as a pair opposites vertices. Which step will be used in the construction?

A. Constructing a perpendicular bisector of a line segment

B. Constructing a segment that is tangent to the circle at a point A

C. Constructing four arcs on the circle's circumference with the compass width as the radius

D. Constructing a perpendicular to a line segment thought a point not lying on it​

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.