The answer is A: Phil Spector.
Explanation for each option:
A. Phil Spector - Berry Gordy aimed to emulate Phil Spector's "Wall of Sound" production technique, which was characterized by its dense, layered, and reverberant sound. Spector's approach to music production was influential during the 1960s, and Gordy sought to create a similarly impactful and distinctive sound for Motown records.
B. Sam Phillips - Sam Phillips was the founder of Sun Records and is best known for discovering and producing early rock and roll artists like Elvis Presley. While influential in the music industry, his style and focus were different from what Berry Gordy was trying to achieve with Motown.
C. George Martin - George Martin was the producer for The Beatles and is often referred to as the "Fifth Beatle" due to his significant contributions to their music. His work was more associated with the British Invasion and not directly related to the Motown sound that Gordy was developing.
D. Quincy Jones - Quincy Jones is a renowned producer and arranger known for his work with artists like Michael Jackson. However, his peak influence came later, and he was not the primary influence on Berry Gordy's early vision for Motown records.