How can you tell who the target audience is? (age, gender, interests etc)

In this advert you can tell the target audience is over weight people or people that want to lose weight.

What is the “unique selling point” of the product making you DESIRE this product (ie why should you buy THIS product)

Why would an audience like this advert or be "interested" by it?

What do the colours in the advert signify? (about the product, company or audience)