The following is missing for the question to be complete:
A. Reminder
B. Emotional
C. Informational
D. Institutional
E. Niche marketing
Answer: C. Informational
Explanation: The informational appeal is precisely offering the benefits of a particular offer, i.e a marketing campaign. It is, in fact, a processing and supply of information specifically about the offer and its main attributes in a rational sense, so it does not appeal to, say, customers' feelings, such as emotional appeal. This simply highlights the features of the product or package that is being offered, as clear and concise information. Such an appeal is usually offered when the offer is good and there are plenty of advantages over competitors that are visible based on the information provided, so there is no need for some other marketing techniques that can sometimes involve tricks and hitting customers' feelings.