Commercial advertisements are made to convince the viewer to buy a product.
Explanation:
Commercial advertisements are made for many reasons, being the most important one to convince the viewer to buy a product. That tends to be the final objective. However, commercial ads also have others functions. For example, when a new product is launched to the market, advertisements not only intend to sell the product but also to give the potential consumer information about it. The consumer needs to know there's a new product available and that's one of the aims of an ad. Apart from that, many times advertisements try to convince the audience about the benefits of the product, which is a way of informing and encouraging the purchase at the same time.
The word harrow in this passage means that the writer could narrate a story so hunting that will agonize your soul. A story so twisted that even the lightest words will sound hunting to the reader. The word harrow up, in this case, can be a synonym of <u>torment.</u>
