the advertising medium that makes only audio impression is

The advertising medium that makes only an audio impression is radio. Radio advertising is a form of advertising that uses audio messages to promote products, services, or brands on the radio. Radio commercials are typically short, usually ranging from 15 to 60 seconds, and are broadcasted between regular programming. They are a cost-effective way to reach a large audience and can target specific demographics based on the type of radio station and programming. Radio advertising allows businesses to convey their message to listeners through sound, music, and voiceovers, creating an auditory experience for the audience.