Answer: Frequency
Explanation:
Frequency is the number of times the audience sees or hears the advertisement. It is significant to measure the frequency of the advertisement such as TV media, posters, hoardings, radio, social media etc. to know the effectiveness of the advertisement.
When the advertisement is effective then the sales for the product or service advertised increases. Advertisement also increases the consumer awareness about the product. Increased frequency can be very efficient as it creates a memory in the minds of the consumers.
