The correct answers are A) Motown and B) British invasion.
what influenced music in America the most during the 1960s were two important movements: Motown and B) British invasion.
Motown was a record company with headquarters in Detroit, Michigan. It was a company that managed African American artist that mostly sang soul or rhythm and blues music. Artist such as Aretha Franklin, Smokey Robinson or Marvin Gayne, became very famous through the Motown label.
On the other hand, the British invasion arrived in America in 1963 with big names such as The Beatles and the Rolling Stones, the Who, and The Kinks.