The correct answer is there was no reason.
There was actually a reason but it was never stated publicly and it was because of all the affairs that occurred between them. They went to France to live outside of it all and not deal with repercussions and save their marriage.
The answer is D because of the emotion.
Anvil is a tool used by blacksmiths, and it is the surface on which the object is placed which is worked on with a hammer- stroked with a hammer.
von Bülow meant (in 1899) that Germany will either have to colonize others ( be the hammer) or it would have to risk being colonized itself (being the anvil), hence showing the need for Germany to participate in colonization.
