Question

Mountaineers
carry
oxygen
cylinder
with
them
because:



a.
The
air
is
very
cold
up
the
mountain



b.
There
is
less
amount
of
oxygen
in
the
air
at
the
top
of
mountain



c.
They
feel
happy
carrying
the
oxygen
cylinders



d.
Oxygen
is
required
for
burning​

Answer 1

Answer:

b.There is less amount of oxygen in the air at thetop of mountain

This is the correct answer!!