I believe the answer is D mainly based off the wording. The question says "Devices" And the only answer with devices involved would be D, Personal protective equipment.
An unintentional injury could be when someone falls off a cliff and breaks their leg, or gets in a car accident.
Hope that helped =)
The appropriate response is Parkinson disease. Parkinson's disease influences the nerve cells in the mind that create dopamine. Parkinson's malady side effects incorporate muscle inflexibility, tremors, and changes in discourse and stride. After analysis, medications can help calm indications, yet there is no cure.
B. The air you breathe.
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world.
Because of it's positive effects on all the body's systems.