Concept:This is a paragraph sequencing question in which pronoun links and logical connectors decide the correct order.
Explanation:S1 introduces feudalism as an economic system based on agricultural production.
Q describes the central relationship between lords and peasants, and states that peasants worked on the lord's land.
The words "the former" in Q and "the latter" in P clearly connect these two sentences.
Therefore, P must immediately follow Q.
P explains that peasants also cultivated their own land along with the lord's land.
S then adds that peasants performed other labour for the lords, who in return gave military protection.
This addition follows naturally after the agricultural work is described in P.
Next, R states that lords also had judicial control over the peasants.
The pronoun "They" in R refers to the lords mentioned in S.
R introduces the social and political dimension, which directly leads to S6.
So the sequence is Q, P, S, R.
Answer:The correct order is QPSR, so Option A is correct.