6. Which of the following is one of the steps to ensure the success of the product?
a. direct marketing
c. transportation system
b. advertising in print media
d. radio, television and internet advertising
7. Which of the following is a kind of activity through the means of land, air, and sea transportation?
a. radio television
c. advertising in print media
b. transport system
d. direct marketing
What kind of activity do producers put investments in promoting their products through advertisements