Correct option is B
Given:
Seven in a row (1 to 7 left→right), all facing north.
“Only two people sit to the right of N.”
“Q sits to the immediate left of N.”
“Only two people sit between N and R.”
“Only two people sit between L and Q.”
According to the given information , seating arrangements will be:

As per the diagram, M sits at the third position from the left end of the line.
Thus, the correct option is (B) M.