During routine investigation
P : other Harappan sites
Q : archaeologists discovered artifacts
R : that perfectly matched
S : remains from

The Proper sequence should be:

A. PQSR

B. PRQS

C. QRSP

D. RSQP

Answer: Option C

Solution(By Examveda Team)

During routine investigation archaeologists discovered artifacts that perfectly matched remains from other Harappan sites.