Question

the state has declared that a former factory site is contaminated, although it doesnt know if the property poses a danger to the public. which expert should the state hire to learn about the risk, and what tasks should that person be able to complete?
an environmental scientist, who can identify, prevent, and reduce pollution and hazards in and around the site
an environmental restoration planner, who can devise a plan to protect the environment surrounding the site
an hydrologist, who can study the water located underground and in the atmosphere surrounding the site
a conservation scientist, who can study and manage natural resources to protect the animals living near the site

Explanation:

The state needs an expert to assess if a contaminated former factory site is dangerous to the public. An Environmental Scientist's core role includes identifying, evaluating, and mitigating pollution and health hazards, which directly addresses the need to determine the site's risk. The other experts have more narrow focuses: restoration planners create cleanup plans, hydrologists only study water, and conservation scientists focus on wildlife and natural resource management, none of which cover the full risk assessment needed here.

Answer:

an Environmental Scientist, who can identify, prevent, and reduce pollution and hazards in and around the site