Explanation:

- We know Q is sitting second from an extreme end. This places Q as the second person from the left or right.

- M is related to Q by having two people between them.

- S is seven places to the right of M, defining another position in the row.

- L sits exactly between Q and S, helping to place more people.

- O's position is found by S's position with one person between them.

- O is three places left of R, so define R accordingly.

- P is second left of N, who itself is four places right of R.

Considering all factors:

- P sits precisely between R and N upon careful placement analysis.

- Option 1: P