It matches because Eleanor helped the soldiers and the quote is saying its your choice if you want to help the world, or just do nothing and Eleanor helped the world.
The correct answer is A.
The ideas in this sentence are not coordinated at all. They are merely two sentences linked by the conjunction "and."
In order to coordinate it correctly, a more appropiate conjunction should be added. One possibility would be the word "also."
The cause-and-effect structure helps the reader understand how specific people's decisions affected the spread of the fire.
