The house,
P : about half a mile distant
Q : that stands in front of us,
R : was built of stones
S : which were dug out of its own site

The Proper sequence should be:

A. QPRS

B. QRPS

C. QRSP

D. QSPR

Answer: Option A

Solution(By Examveda Team)

The house, that stands in front of us, about half a mile distant was built of stones which were dug out of its own site.