Explanation:

- U is 30m south of T: This places U directly beneath T.

- R is 30m east of P: R is positioned to the right-hand side of P.

- U is 10m east of S: This places S 10m to the left of U.

- U is 10m north of Q: Q is directly below U.

- V is 20m east of U: V is 20m to the right of U.

- Q is 20m east of P: Q is positioned 20m to the right of P.

To find S's location relative to T:

- From T, move 30m south to reach U, then move 10m west to reach S.

- This places S South and then slightly West of T.

- Therefore, S is Southwest of T.

- Option 4: Southwest is the correct answer.