Soren Kierkegaard, Jean Paul Sartre and Friedrich Nietzsche are associated with?

Soren Kierkegaard, Jean Paul Sartre and Friedrich Nietzsche are associated with?
(a) Idealism
(b) Realism
(c) Pragmatism
(d) Existentialism

✅ Correct Answer: (d) Existentialism
Explanation: These philosophers are pioneers of Existentialism, which focuses on individuality, freedom, and personal responsibility.