The correct answer is D, Political Parties.
Read this , I don’t know how to explain it though sorry:/
<span>Dr. Tepper-Harmon is of the belief that life-span development can't be studied without considering several factors such as biological, cognitive, and socio-emotional dimensions. He holds this belief because he has determined that development is multidimensional, and that no conclusion can be drawn from looking at only one aspect of development.</span>
It's important to keep a clear evacuation route is because you need to make sure that you and your family, friends, etc, can get out safe, and alive.