It looks to be that choice "A" has been cut off. If not, then C should be your answer!
The effects of the rectangular arrangement of members in a group meeting would be:
<span>creates an uneven flow of communication
gives an appearance of authority figures at the ends of the table
In addition to that, communication is the bloodline among the member of a group and it must be emphasised with utmost importance to have a most efficient arrangement as possible.</span>