"<span>d. high levels of both minerals and salinity" would be the best option, since without direct contact with larger bodies of water it's very hard for the minerals and salt to dissipate and "spread out".</span>
It put it onto the policy agenda. Thanks to the media, the civil rights fight started getting supporters from all around america and form all classes and ethnicities. Without the media, we can't know when the civil rights would be won because the people wouldn't have known what was going on and to what degree.
Testimonials, illustrations and explanations are all supporting materials. So the answer is all of the above.
Medieval doctors learn treatment from Romans
