Evolution is broken

Evolution requires that the strongest of the species reproduce more than the weakest, which is not the case for the human race where nearly everyone survives to reproduce.  Statistically, wealth and #of children have a loose negative correlation which probably is resulting in genetic regression.

I can see four possibilities:
A)War or lack of resources causes survival rate to drop sufficiently for evolution to work
B)Genetic Engineering progresses far enough that we can improve the human genome manually
C)New social reproduction norms such as polygamy or government controlled breeding restrict reproduction to people with superior genomes
D)Sudden extinction causes human race to go extinct before evolving (ie global thermonuclear war, supernova)

Which scenario do you prefer and which do think is most likely.  I would prefer B but A is probably more likely.  If you can think of other like scenarios, post them.

>>3, the genome doesn't just lock into place once people no longer need to improve to survive.  Most genetic mutations are unfavorable, so without natural selection the gene pool will become polluted with junk DNA  as seen in >>2's simulation.  The current system isn't sustainable, so somethings going to need to change.