A. It increased the division of labor.
Darwinism, as you probably know, is the idea that creatures grow and adapt to all the stresses of life and our wolrd and in doing so, allow future generations to flourish.
Survival of the fittest was not Darwin's quote, but rather Herbert Spencer's, who said that if things need to change to survive, than those creatures we see today must have been the ones who changed the best, or were the fittest to survive. He created social Darwinism, saying that governments should not restrict big businesses, because those businesses that are fit and ready to survive will, and those who aren't won't.
In America, we used that with our racial issues by saying that the race that is physically sstronger and ready to adapt to its environment (whities), will find success, and those who fail socially (darkies) must have been inferior. It justified putting down minorities.
The perimeter of a rectangle because Circumference is the out line of a circle
I know a lot of other trans athletes have to give up the sport that they love when they start to transition because organizations have a lot of regulations in terms of trans athletes competing on non-coed teams. I’m definitely very fortunate that, at least as far as riding, it’s all been coed so my gender identity hasn’t been a problem.