Why is this image an example of an appeal to pathos?

   B. Because it uses feelings of patriotism to appeal to our emotions

Explanation:  This picture is an example of an appeal to pathos  because it uses the sense of patriotism to convince an audience to the correctness of its claim. The feeling of patriotism causes emotions at the auditorium to achieve the effect of approval by listeners.

The picture does not mention any facts or reason to appeal to listeners, in that case it would be a logos.  

If the credibility, or authority, were mentioned in the appeal, then that would be ethos.

your answer is c) experiments with water vapor showed that elements combine in specific proportions.

different routes can lead to sammy to different places, with different roads.   if you check a map, you can see the routes.   try to make connections of the places and count how many there are.   hope this : )