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(The complete setup for this game can be found here: lsat/viewtopic.php?t=6157)
The correct answer choice is (B).
If L is connected to M and O, the following connections result:
With L connected to O, O is closed and thus from our inference discussion K must connect to M:
Remember, because the bridges can curve as much as needed, we are not worried about the apparent intersection above. We would easily overcome that problem by looping a bridge from K to M around the other islands, but that is a waste of time.
Accordingly, answer choice (B) is correct.
Note that we can also infer that J must connect to L, because J must connect to exactly two bridges, and K, M, and O all have the maximum number of connections allowed by the rules. This information eliminates answer choices (A) and (D).
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