The following four labelled sentences P, Q, R and S, when properly sequenced, form a coherent paragraph about the concept and origin of Yoga. Select the most logical order.

Introduction / Context:
This para-jumble explains what Yoga is, where it originated, what the word means, and how it relates to mind and body. The sentences include historical information, etymology, philosophical meaning and practical description. A coherent paragraph must introduce Yoga, then expand on its name, spiritual significance and function as a discipline.

Given Data / Assumptions:
- P: Yoga is one of the ancient art forms which was originated in India thousand years ago.
- Q: It is the connection of individual Soul to the Divine soul.
- R: It is a Sanskrit word derived from Yuj which means to Unite in its ordinary sense.
- S: It’s a system of mental and physical discipline which controls the mind and the body.
- We need a sequence that begins with the historical introduction, then gives the word's origin, then the spiritual meaning, and finally describes Yoga as a discipline affecting mind and body.

Concept / Approach:
P naturally introduces Yoga, mentioning its ancient Indian origin. After introducing the practice, it makes sense to explain the origin of the word itself, which is done in R by deriving Yoga from the Sanskrit root “Yuj”, meaning “to unite”. Once that meaning is established, Q explains what is being united: the individual soul and the Divine soul. Finally, S describes Yoga practically as a system of mental and physical discipline that controls mind and body. The resulting order is P–R–Q–S.

Step-by-Step Solution:
Step 1: Use P as the opening sentence because it introduces Yoga as an ancient art form originating in India.
Step 2: Follow with R, which tells us that the word Yoga comes from the Sanskrit “Yuj”, meaning “to unite”, adding linguistic context.
Step 3: Insert Q next, to explain that this “union” is between the individual soul and the Divine soul, giving the concept a spiritual dimension.
Step 4: End with S, which describes Yoga as a system of mental and physical discipline that actually implements this philosophy by controlling mind and body.

Verification / Alternative check:
Reading PRQS as a paragraph introduces Yoga historically, then unpacks the literal and spiritual meaning of the term, and finally explains how it works as a discipline. Starting with Q or S would be less clear: Q speaks of “It” (Yoga) without having introduced what “It” is, and S calls Yoga a system of discipline without first giving any philosophical or historical background. Thus PRQS is both logical and informative.

Why Other Options Are Wrong:
- QPRS and SQPR: These begin with references to “It” without first naming Yoga properly and can confuse a reader who expects an introduction first.
- SPQR: Starts with the practical description, then circles back to origin and philosophy, which is a less natural order for a short explanatory paragraph.

Common Pitfalls:
In concept-based para-jumbles, learners sometimes jump directly to deep philosophical statements, thinking they are more important. However, a well-structured explanation usually starts from the outer layer (history or definition), then moves inward to meaning and application. Keeping this in mind helps you quickly identify P and R as crucial early sentences in this paragraph.

Final Answer:
The most logical order of the sentences is PRQS.