The correct option is C Its effects should be thoughtfully considered before it becomes a reality
Option B is correct option as it is said in passage 2 that The past year has seen
a flurry of proposals aimed at bringing celestial riches
down to Earth. No doubt this will make a few
billionaires even wealthier, but we all stand to gain:
the mineral bounty and spin-off technologies could
enrich us all.
But before the miners start firing up their rockets,
we should pause for thought. At first glance, space
mining seems to sidestep most environmental
concerns: there is (probably!) no life on asteroids,
and thus no habitats to trash. But its consequences
--both here on Earth and in space--merit careful
consideration.