1. Avolcano is an opening or rupture in a planet's surface.
P. Erupting volcanoes can pose many hazards,
Q. This opening allows magma, ash and gases to escape from below the surface.
R. Volcanic ash can be a threat to aircraft.
S. Volcanoes are generally found where tectonic plates are diverging or converging.
6. Historically, so-called volcanic winters have caused catastrophic famines.

Options

A. RSPQ
B. SQRP
C. SPQR
D. QSPR

Answer

D

Explanation

QSPR