The concepts like repression and catharsis, psycho sexual development, sex as an urge responsible for all types of behaviour, were presented by?

The concepts like repression and catharsis, psycho sexual development, sex as an urge responsible for all types of behaviour, were presented by?
(a) Sigmund Freud
(b) Skinner
(c) Vygotsky
(d) Bandura

✅ Correct Answer: (a) Sigmund Freud
Explanation: Freud emphasized repression, catharsis, and psychosexual stages, with sex drive as a central motivational force.