Explanation:

Let's look at each part of the sentence:

- P: are not allowed

- Q: players

- R: to change to a different position

- S: unless there is a special requirement

Now, let's check each option:

- Option 1 (SPRQ): S (unless there is a special requirement) + P (are not allowed) + R (to change to a different position) + Q (players)

*Not correct – this does not form a meaningful sentence.*

- Option 2 (QPRS): Q (players) + P (are not allowed) + R (to change to a different position) + S (unless there is a special requirement)

*Correct order: “players are not allowed to change to a different position unless there is a special requirement.”*

- Option 3 (SQPR): S (unless there is a special requirement) + Q (players) + P (are not allowed) + R (to change to a different position)

*Not meaningful.*

- Option 4 (RQSP): R (to change to a different position) + Q (players) + S (unless there is a special requirement) + P (are not allowed)

*Not meaningful.*

- Option 5 (PQRS): P (are not allowed) + Q (players) + R (to change to a different position) + S (unless there is a special requirement)

*Not meaningful.*

Correct Answer:

Option 2 (QPRS) forms a grammatically correct and meaningful sentence.