Answer:
D) was the attempt to apply Darwinian theory to popular society.
Step-by-step explanation:
"Survival of the fittest" is an idea proposed by Herbert Spencer, who was a 19th-century social philosopher and one of the first proponents of social Darwinism. Spencer attempted to apply Darwinian theory to popular society, arguing that the "fittest" individuals and groups would inevitably rise to the top of society, while the "unfit" would be left behind. He believed that this natural process of competition and selection was essential for progress and development.