Which is an example of a way in which science has improved a societal problem?
contaminated water being purified
pathogens becoming resistant to antibiotics
bacteria contaminating food
unknown diseases appearing in some areas

A way in which science has improved a societal problem is Contaminated water being purified

Water purification is the elimination of pollutant from untreated water in order to obtain clean drinking water which is suitable for human consumption or for mechanical use. Because science has discovered many distinct techniques to purify water by chlorination or some other arrangements. After the removal of bacteria, it can be utilized to clean the polluted and contaminated water. The sewage treatment plant utilizes useful bacteria to decrease the slurry. The anaerobic bacteria absorb contaminated sewage and generate methane gas. This gas is utilized further as a fuel for cooking food.

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.