Answer:
[tex]D[/tex]
Explanation:
Here, we want to select the setback of using chlorine bleach
Chlorine is a choice material in water purification because of its track record in the removal of pathogens from water.
However, while it is effective in battling microscopic organisms such as bacteria and viruses, it is otherwise useless in removing other contaminants such as heavy metal residue from industrial effluent. Thus, it is only useful in the aspect of removing microscopic organisms from water
