Final answer:
Sigmund Freud's theories in psychology, focusing on the unconscious mind, impacted literature by shifting writers' focus from factual storytelling to exploring characters' internal psychological experiences.
Step-by-step explanation:
The influence of Sigmund Freud's theories on literature caused a shift in focus from the external facts of a story to the internal psychological experiences of the characters. Freud, a foundational figure in psychology, introduced concepts such as the unconscious mind, repressed memories, and defense mechanisms.
These elements of Freudian theory had a significant impact on many fields, including literature, where writers incorporated the depth of characters' emotions, thoughts, and unconscious motivations rather than merely presenting factual details.
Freud's revolutionary ideas reshaped the cultural landscape and were particularly influential in the new morality of the 1920s, where traditional values were being questioned and the exploration of the human mind was reflected in various aspects of society.
His psychodynamic theory significantly contributed to the ways characters and their internal conflicts were portrayed in literature, leading to narratives that emphasize psychological complexity over straightforward factual narratives.
Therefore answer is A. Literature.