It is given that,
The eight people are P, Q, R, S, T, U, V and W.
V is sitting third to the right of T, who is sitting in the middle of one of the sides.
Only one person is sitting between T and S.
We get,

W is sitting adjacent to S and is sitting third to the left of U.
Only one person is sitting between U and R.
We get,

Not more than two people are sitting between Q and P when counted from the left of Q.
Here, case 2 is invalid.
Q is not sitting adjacent to T.
The final arrangement is,

Here, only option c is correct. W is sitting fourth to the left of Q.