Answer:
Infomercials.
Step-by-step explanation:
In this scenario, Jack LaLanne launched the fitness movement in the United States and advertised it through television (TV) commercials. Jack promised viewers that they would look and feel younger, just by squeezing some fruits and vegetables into his Jack LaLanne Power Juicer and enjoying the drink after a workout.
Hence, the type of communication illustrated by this example is an infomercial.
In marketing, an infomercial is a long-form of advertisement in which marketers or sales personnels are focused on educating potential or prospective customers about a product through a television (programme) as a medium of communication.
Basically, the difference between an infomercial and other types of advertisement (commercial) is that, infomercials are typically longer and more detailed than a regular advertisement. Infomercials provide companies with a persuasive call to action on the side of potential customers.