What Affect has the global quarantine had On air quality world wide.?

In some areas, it has cleansed the atmosphere.

Explanation:

Since people are supposed to leave only out of necessity, they have been using their vehicles less, therefore, the pollution is decreasing.  

ya the other dude is right

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers