The correct answer is: D. how-tos.
Informational text refers to text that guides or instructs readers about how to do something or how to specifically carry out a task, Informational text can also be called "How-to" guides. An example of informational text or a "how-to" would be a little booklet called a user-manual, that is included when you buy an electronic item, such as a television. A user manual for a television would guide you with the specific steps needed to set up and use your new television.