Toxic chemical pollution

Toxic pollution is contaminated water, soil, and air that is harmful or poisonous. It includes industrial wastes like toxic heavy metals from mining or chemicals from factories, and also sewage and particulates from power plants. ... In fact, toxic pollution is the largest cause of death in the world.

whats the question?

Explanation:

it means there are 3 atoms of oxygen

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be