In the following questions, the first and the last part of the sentence are numbered 1 and 6. The rest of the sentence is split into four parts and named P Q R and S. These four parts are not given in their proper order. Read the parts and find out which of the four combinations is correct. Then find the correct answer and indicate the correct response.

Q:

1. Architecture began
P. to build their own shelters
Q. on ready-made ones
R. When early people started
S. rather than relying
6. such as trees and caves. 

• 1
  RPSQ
• 2
  PRQS
• 3
  RQPS
• 4
  PSQR