Answer:
Based on what I have read, I can infer that the relationship between advertising, and the price you pay for a product are directly related to an increase of price to the consumer, but that it is necessary tool to get the product information out to the market area."For an advertisement to be effective, its production and placement must be based on a knowledge of the public and a skilled use of the media"
Explanation:
Based on the given sentences above, the one that is punctuated correctly is the second sentence: She sends an email therefore, to her instructor and advisor. What makes the first sentence incorrect is that, it has no period at the end of the sentence. Hope this answer helps.