List any four channels of advertising media.

Four channels of advertising media are:

1. Newspapers — A widely used print medium with wide circulation and continuity, allowing daily messages to be repeated.
2. Television — An audio-visual medium that combines picture and sound for greater impact, reaching a large audience.
3. Radio — An audio medium with wide coverage that can reach even illiterate people through voice, tone, and music.
4. Outdoor Advertising — Includes posters, billboards, neon signs, wall writings, and signboards, having long life and wide appeal.