Question: Each question is a logical sequence of statements with a missing link, the location of which is shown parenthetically. From the four choices available you are required to choose the one which best fits the sequence logically.
A deliberation is a form of discussion in which two people begin on different sides of an issue. (_______) Then each decides, in the light of the other argument whether to adopt the other position, to change his or her position somewhat, or to maintain the same position. Both sides realize that to modify one’s position is not to lose; the point is to get closer to the truth of the matter.
The passage begins with the situation of two people on two different sides of the issue. Each gets a chance to argue his or her position and after listening to each other they decide whether they wish to change their position or not. The use of ‘then’ after the blank shows that some action has taken place before it, and a. is the only choice showing an action.