3. (A)
Question type: Unconditional
The question stem doesn’t give us much to go on here. In an ordering game, we might expect a problem like this to revolve around second-order inferences. But we don’t really have a lot of second-order inferences to provide possible avenues. On the other hand, it could still be potentially time consuming to work our way through all the answer choices, seeing whether they yield acceptable situations.
So let’s take a first pass, eliminating whatever we can on the basis of the constraints. For instance, (C) implies that L makes a final argument, but we know that L must make an opening.
Also, the answer choices all deal with potential pairings. We have one constraint that centers on pairings, the first one, specifying that M goes with G or V. So M can’t go with L (eliminate (D)), and M can’t go with S (eliminate (E)).
Now let’s look carefully at the two that are left. Choice (A), involving G and R, doesn’t seem to raise any prima facie problems. But what about (B)? If G and V are on a team together, who does M get paired with? This choice also violates our first constraint. The answer must be (A).