Final answer:
Expository speaking is the type of informative speaking that should be used to inform classmates about current trends in cancer research and treatment, focusing on providing factual information. Examples of topics to discuss include nanotechnology for drug delivery and cancer imaging, targeted therapies, and different treatment options.
Step-by-step explanation:
When informing your classmates about current trends in cancer research and treatment, the type of informative speaking you would use is expository speaking. Expository speaking is a method of communicating information in a clear and objective manner, focusing on providing facts and explanations.
For example, you can explain the latest advancements in cancer research, such as the use of nanotechnology for drug delivery and cancer imaging, or the development of targeted therapies and immunotherapies. You can also discuss the importance of early detection through routine screenings and the different treatment options available, such as surgery, chemotherapy, radiation therapy, and immunotherapy.
By presenting accurate and up-to-date information in an organized and concise manner, you can effectively inform your classmates about current trends in cancer research and treatment.