Too weak central gov<span />
"It was validated after scientists completed several investigations to gather evidence" is the statement among the statements given in the question that <span>is correct about the Theory of Natural Selection. The correct option among all the options that are given in the question is the last option or option "D". </span>
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.
This is true :) hope this helps