Final answer:
The element not inherent to realism is pragmatism (D), which differs from realism by suggesting that reality can have different interpretations based on practical considerations rather than an objective reality governed by natural causes.
Step-by-step explanation:
Understanding Realism in Contrast to Other Philosophies
In the context of philosophical discussions about reality and its perception, several theories emerge. Realism is a philosophical doctrine that believes in a reality that exists independently of our perceptions, thoughts, or beliefs. This reality is shaped by natural laws and causes. When considering the question of which element was not part of realism, the options given are social Darwinism, instrumentalism, naturalism, and pragmatism. Among these, social Darwinism draws on Darwinist theories for social applications, instrumentalism focuses on the utility of beliefs and theories, and naturalism regards the natural world as the foundation for understanding humanity. Pragmatism, however, is different; it does not necessarily assert that language describes reality as it is but suggests that the meaning of words and concepts is based on their practical effects and usefulness within a community.
Therefore, in the context of realism, pragmatism deviates from the idea of an independent and objective reality, as it posits that reality can have different interpretations based on the practical considerations of different groups. Accordingly, the answer to the question is pragmatism (D) as the element not inherent to realism.