Answer:
The usefulness of the magazine
Step-by-step explanation:
A primary factor that determines or affect the demand of a particular finished product or service is the amount of satisfaction that the customer (consumer) will derive from the use of such products or services.
This ultimately implies that, the utility or usefulness of a product or service determines whether or not it will be demanded by the consumers.
Hence, the demand for a consumer magazine is affected by the usefulness of the magazine. A consumer is most likely to buy a magazine only if it has informations that interest him or her i.e usefulness.