Advertising is needed to make people know about products. We can't expect good sales score when consumers don't notice the existence of the product. And advertising is also important for it conveys the information of the products. When people know well about the product, it is more likely for them to buy it. Also, advertising can play a role when it comes to forming some image or impression about the company or product, which has great effect in sales.

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-T.Jhozel 

Advertising is needed to make people know about products. 

>> Correct!

OR: Advertising is required to inform people about products. 

We can't expect good sales score when consumers don't notice the existence of the product. 

>> Correct!

OR: We cannot expect a good sales score if consumers are unaware of the product's existence. 

And advertising is also important for it conveys the information of the products. 

>> Correct!

OR: Advertising is also important because it conveys information about the products. 

When people know well about the product, it is more likely for them to buy it. 

>> Correct!

OR: When people are well-informed about a product, they are more likely to purchase it. 

Also, advertising can play a role when it comes to forming some image or impression about the company or product, which has great effect in sales.

>> Correct!

OR:  Also, advertising can help to shape an image or impression of a company or product, which can have a significant impact on sales.