Answer:
Option B.
Step-by-step explanation:
Environmental problems are the problems facing the environment because of human activities, and this problems could cause injuries or death to human beings. For instance now acid rain; acid rain is caused by by human activities, which we do by releasing harmful gasses into the environment which react in the atmosphere to give acidic rain. Others include deforestation, Population Growth, water pollution and so on.
Therefore, the Solutions to environmental problems must be designed with sustainable goals. For example, deforestation; the solutions maybe is to plant trees, regulations on cutting trees and so on, so as to save great species of trees.