Cows are probably an animal that is overpopulated because of the human species. This is happening because people need cows for what they can offer, such as milk or even food as a result they keep pushing the limits to get the most out of these animals.
The finest sedimentary particles would be found at the mouth of the river. These particles have been eroded by debris and water. They are easily carried out to be deposited near the end of the river.
I believe the answer is C. This is because all three headlines include information about transportation systems (first one with air delays, second with road closures and third with roads being reopened) being effected by natural disasters.
Here are why the other ones are incorrect:
A. In headline 2 with Arizona, it states how wildfires caused road closures around the state and not the area of the wildfire (headline 1 also disproves this answer, since it says “Worst delays since 9/11”, meaning it effected a lot more than the nearby area).
B. None of these are predicting natural disasters occurred, as seen by some of the language: “Arizona Fires FORCE road closures” (present tense, not past).
D. These do not mention anything about railroads being immune, so it can’t be it.
Hope this helps!