Answer:
In expository writing, a topic sentence is a sentence that summarizes the main idea of a paragraph. It is usually the first sentence in a paragraph. Also known as a focus sentence, it encapsulates or organizes an entire paragraph.
Explanation:
A and D both fit the definition, but i would go with A
The elements that nori should <span>include in order to write an effective analysis are:
</span><span>the advertising techniques used to persuade the viewer. In order to do this, Nori need to determine whether the advertisers using a visual or principle attraction method for this product
what tools the advertiser uses to sell the product. This could range from newspaper, billboard, television, or phamplets
the purpose of the advertiser's message. Nori need to do this in order to find out the customer segmentation of the product</span>