It has affected the range of choice.
Step-by-step explanation:
This influenced a preference of radio channels as more entrants were on the scene so that they wanted to provide better media and better news. Big companies purchased and controlled radio stations so that less choice and variation were possible due to deregulation.
Yes, because it leads to the creation of monopoly power as we recognise the scenario. Even though a single company has bought and begun trying to control many radio stations in this case.
Since the choice in radio stations is changed by the creation of monopolies and oligopolies, so now have less variation and less choice.