The purpose of identifying your audience’s questions about your product is to

choose a tone and style for your advertisement
identify the purpose of your advertisement
determine the layout for your advertisement
address their questions in your advertisement

The correct answer is D. Address their questions in your advertisement

Explanation:

An advertisement is a communicative tool whose main purpose is to promote a specific product or service and therefore invite to the audience to use it or buy it. The audience of an advertisement usually depends on the type of product or service that is being promoted as not all products can be used by all people. Additionally, the audience decides whether to buy or use a product based on the information provided by the advertising, which means the audience and possible buyers needs to understand key information of the product and service before using or buying it.

Because of this by identifying the questions that the audience can have about the product or service, it is possible to create an advertising that offers clear and complete information about the product advertised including its price, use, advantages, etc and which correctly answers the questions of the audience that is most cases implies the audience is more likely to use or buy the product. Considering this, it can be concluded the purpose of identifying your audience's questions about your product is to "address their questions in your advertisement".

since it is asking for her reaction to elnora's trouble at school you can rule out any answers with a positive response (b). then you can rule out (d), this is because it does not show the mother's reaction but the daughter's response. that leaves you with two options (a) and (c), by looking at the options you can rule out (c) because it isn't referring back to elnora's issues at school.