Answer: A) 33 rpm record
Explanation: The 45 rpm record, also known as single vinyl records, was named after the speed rpm, i.e. speed of play. It was released after using 78 rpm plates. On this vinyl single record, there were usually two songs, one on each side.
The 33 rpm vinyl record or better known as Long Play record, which had a lower speed than 44 rpm records, but they are bigger and can record the entire album. At the time of popularity of 33 rpm records, single vinyl records served to announce the Long Play record album, recording two songs from the album as an announcement and a commercial of the upcoming album.
After that, the eighth track tape player appeared, which was used to record music, which preceded the appearance of the famous cassette player.