What genre did Alfred Hitchcock famously pioneer in the 1960s?

Alfred Hitchcock is renowned for pioneering the psychological thriller genre, particularly in the 1960s. This era of Hitchcock's work emphasized complex character motivations, psychological tension, and suspense, which were hallmarks of his filmmaking style. His films from this period, such as "Psycho" (1960), exemplified this genre by focusing on the inner workings of the mind and the impact of fear, obsession, and moral ambiguity on human behavior. Hitchcock's innovative narrative techniques, such as unreliable narrators and unexpected plot twists, further established psychological thrillers as a distinct genre that engages audiences on a deeper emotional level.

In contrast, the other genres listed do not align with Hitchcock's primary contributions during this time. Romantic comedies, fantasy adventures, and historical dramas are characterized by different thematic elements and storytelling approaches, which were not the focus of Hitchcock's most influential works in the 1960s.