Final answer:
The frequent companions of Bon Scott, the lead singer of AC/DC, were his bandmates.
Step-by-step explanation:
The frequent companions of Bon Scott, the lead singer of AC/DC, were B) His bandmates. Scott was the lead vocalist for AC/DC from 1974 until his death in 1980. During his time with the band, he developed strong relationships with his bandmates, including brothers Angus and Malcolm Young.