In the question below, there is a sentence of which some parts have been jumbled up. Rearrange these parts which are labelled P, Q, R and S to produce the correct sentence. Choose the proper sequence.
The appearance
P : this dinosaurs were at their peak
Q : of the first mammals on the earth
R : at the time when
S : went almost unnoticed
The Proper sequence should be:
SRPQ
QSRP
QRPS
RPQS
Correct answer is C
No explanation has been provided for this answer.