Answer:
Infomercials.
Step-by-step explanation:
Infomercials are advertisements or commercials on television that resembles a type of a regular television program. But their main difference from such regular television programs is that they normally contain toll-free numbers to which customers/ viewers can get access to the products advertised.
In the given passage, Jack Lalanne's fitness movement commercial promises "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". Through this promise, they are advertising their "Jack Lalanne Power Juicer", which makes it an infomercial, providing information as well as commercializing their product.