can you answer this plss thank you I will be Mark brithness.

Answer:
1.The Purpose of Advertising
Advertising has three primary objectives: to inform, to persuade, and to remind. Informative Advertising creates awareness of brands, products, services, and ideas. It announces new products and programs and can educate people about the attributes and benefits of new or established products.
2. A target audience is the intended audience or readership of a publication, advertisement, or other message catered specifically to said intended audience.
3. By digital commercial art
4.It depends you should read the message before answering that
5. It depends on what is the product
Because if that product can help me, has proven that effective, good quality and good for my health then I will buy it but if it's not then why would I spend my money buying a product that doesn't help, and good for my self.
hope it helps :)