Final answer:
George Martin's 'Sgt. Pepper's Lonely Hearts Club Band' is known for its ground-breaking approach to music, combining various genres and pioneering recording techniques in psychedelic rock and pop music.
Step-by-step explanation:
The album by George Martin that is renowned for pushing the boundaries of traditional music genres is b) "Sgt. Pepper's Lonely Hearts Club Band". This album, released by The Beatles in 1967, is considered one of the most influential albums in the history of recorded music.
Its innovative use of recording techniques, non-traditional instruments, and experimental sounds made it a milestone in the evolution of psychedelic rock and progressive pop. The album creates a cohesive art piece with its songs blending into each other, which at the time was a departure from the conventional practice of assembling a record as a collection of singles. It also integrated elements of classical music, traditional Indian music, music hall, and avant-garde sounds.