Concept:The passage contrasts apparent rest with actual cosmic motion.
Explanation:S1 introduces the idea that appearances can be deceptive.
Sentence S presents the typical feeling of being at rest while reading.
Sentence P refutes this by stating that you are moving with the Milky Way at
2.1 million km/h.
Sentence R adds that this speed excludes Earth's spin, orbit, and the Sun's motion around the galaxy.
Sentence Q calculates that in roughly 20 seconds you have already travelled thousands of kilometres.
Therefore the correct logical order is S → P → R → Q.
Answer:The correct sequence is S, P, R, Q, i.e., option D.