Answer:
4.1.1 This is an advertisement for Heinz Tomato Ketchup.
4.1.2 The text is about the natural and high-quality ingredients used in Heinz Tomato Ketchup, as opposed to the artificial ingredients found in other ketchup brands.
4.1.3 The purpose of using "It's only natural" in the headline is to emphasize the natural and high-quality ingredients used in Heinz Tomato Ketchup, and to differentiate it from other ketchup brands that may use artificial ingredients.
4.1.4 The visual image of ripe tomatoes and the natural landscape in the background supports the overall message of the advertisement that Heinz Tomato Ketchup uses only natural ingredients. The image suggests that the ketchup is made from fresh and high-quality ingredients, which reinforces the claims made in the text.
4.1.5 The purpose of advertising is to promote and sell a particular product or service by creating awareness, generating interest and desire, and encouraging customers to take action (i.e., make a purchase). In this case, the advertisement is promoting Heinz Tomato Ketchup as a healthier and more natural option compared to other ketchup brands.