Answer:
The answer is e) increase demand for the product
Step-by-step explanation:
Advertising can increase the demand for a product in the log run by continually and consistently promoting the brand and product awareness of the product in the mind of the customer/consumer.
Moreover, effective advertising may lead up to the economies of scales over time. And economies of scale in return, influences effective and cost saving advertising.
Marketing can never "Assure" that a product will succeed! No one can!