The correct options are
A Water which is odourless.
B Water which is free from harmful micro-organisms.
C Water which is free from dissolved impurities.
D Water which is obtained from water purifiers.
Water which looks clear may not always be clean and fit for drinking as it may have dissolved impurities, microorganisms and may even have odour. Water can be made fit for drinking by boiling it, by passing it through purifiers or by the chemical process of chlorination. If the water is not safe for drinking, it may lead to various water born diseases like typhoid fever, cholera, diarrhoea and Hepatitis A or E.