The commonly used practice of payola in the radio industry in the 20th century refers to the act of offering radio stations free promotional materials in exchange for playing certain artists more often. Thus the correct answer is B.
What is radio?
Radio is referred to as means of communication used to exchange information and ideas in order to create awareness and entertainment for people to engage them effectively.
The unethical action of paying advertising music channels to broadcast specific recordings without disclosing the recordings to audiences at the time of telecast is known as Payola.
In the radio industry in the twentieth century, payola referred to the act of providing radio stations with free promotional materials in exchange for playing certain creatives more commonly.
Therefore, option B is appropriate.
Learn more about radio, here:
https://brainly.com/question/15857769
#SPJ2
