Raggs would like to take a peek into each of the doors the orcs came through.
Whichever looks like it could have more company coming through would be the door he thinks we should block.
If, for examples, there is another door or passageway exiting the right door/room but not the left, then Raggs will suggest blocking the right door instead.
Fuirthermore, if the rooms appear to be empty and without any other means of access, Raggs will want to explore that room before moving through an unknown door.
But, since no orcs came through the center door, going through that one makes tons of sense to Raggs!

Just a matter of which of the doors it would be more useful to block. (OOC: Good idea Iono with using the table, btw!)
OOC: lemme know if you want some kinda stealth/sneaky check for peeking through/behind the doors to the left and right...unless, of course, the other members of the party disagree/stop him.