Four of the following five are alike in a certain way and thus form a group. Which is the one that does not belong to that group?

Since it is mentioned that everyone is facing towards the center, Right means anti-clockwise direction and Left means Clockwise direction.

The first cue says that O is the immediate neighbor of both K and Q. This means O is sitting in between K and Q.
This presents 2 possibilities :-

1. K is sitting to the left of O and Q is sitting to the right of O.
2. K is sitting to the right of O and Q is sitting to the left of O.

Now, the next cue says only one person sits between K and J :-

For L and M to be neighbors and neither of them sit next to Q, the arrangement possible is :-

Since 2 persons sit between M and P :-



As we can see, in the second case the last condition can not be held true thus the only case possible is the first one. Thus the final answer set is :-

On analyzing the options, we can see that all of JL, NQ, OK, an PJ, the first person sits to the right of the second person. This is not the case with ML where M sits to the left of L.
Hence the answer to this question is (C).