Which intellectual figure significantly influenced early 20th-century authors, prompting them to reconceptualize human identity in profoundly innovative ways?

Explanation

The early twentieth century saw writers deeply affected by the ideas of Sigmund Freud and Sir James Frazer, both of whom challenged traditional views of human nature and identity. Immanuel Kant's philosophy, while influential in other areas, did not directly inspire this reimagining of human identity during that period. Therefore, the correct choice includes both Freud and Frazer but excludes Kant.