S1:tWhen a satellite is launched, the rocket begins by going slowly upwards through the air.P :tHowever, the higher it goes, the less air it meets.Q :tAs the rocket goes higher, it travels faster.R :tFor the atmosphere becomes thinner.S :tAs a result there is less friction.S6:tConsequently, the rocket still does not become too hot.The Proper sequence should be:

S1:tWhen a satellite is launched, the rocket begins by going slowly up

1.	S1:tWhen a satellite is launched, the rocket begins by going slowly upwards through the air.P :tHowever, the higher it goes, the less air it meets.Q :tAs the rocket goes higher, it travels faster.R :tFor the atmosphere becomes thinner.S :tAs a result there is less friction.S6:tConsequently, the rocket still does not become too hot.The Proper sequence should be:
A.	QPRS
B.	QSPR
C.	PQRS
D.	PQSR
Answer» B. QSPR