8 is B and 9 is K. I’ll try to help you with the other ones.
WWI had an enormous impact on the European Continent as well as the world. The war had enormous economic, social, and political implications that ended empires, redrew lines on the map, established new countries, and revolutionized political orders across the European continent. In addition there was much needed rebuilding and reconstruction across the continent as a result of war and the reintegration of societies that were dealing from the conflict. In addition there were international organizations that were forming out of this period in an attempt to deal with preventing future Great Power conflicts such as the League of Nations.
ANSWER:
B) <u>logical</u><u> </u>fallacy
A logical fallacy is an error in reasoning. The ideas might be arranged right, but something you said isn't quite right. The content is wrong
The speed of stream is 3 km/hr
<em><u>Solution:</u></em>
Given that girl is swimming downstream
To find: Speed of stream
In still water she can swim at 2km/h and the river is flowing with her
Speed in still water = 2 km/hr
She covered a distance of 12km in 2h 24 min
Distance = 12 km
time taken = 2h 24 min = 
Therefore,


<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then:
</u></em>
Speed downstream = (u + v) km/hr
5 km/hr = 2 km/hr + v
v = 5 - 2
v = 3 km\hr
Thus speed of stream is 3 km/hr