Explanation:

- P is taller than only U and R, meaning P ranks third from the bottom in height.

- R is taller than U, placing U at the shortest position.

- Since P is taller than only U and R, R must be the second shortest.

- Q is taller than S but shorter than T, positioning T somewhere above Q and S below Q.

- T is not the tallest, so someone else, likely V, is taller than T.

- Arranging from tallest to shortest gives: V, T, Q, S, P, R, U.

- To find how many people are between Q and R:

- Order shows: Q (3rd) stands before P (5th), R (6th).

- Between Q and R, have S, P.

Thus, between Q and R, there are 2 people.

Based on this, Option 3: 2 is correct.

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