Answer:
D.All of these can help you as you plan your research.
Step-by-step explanation:
all of those will help you about a topic you are going to do. You already know part of that topic, so you'll say what you know. You can figure out what else you would like to know by looking up more info that you may have missed. You can look through your notes to find keywords for your search so you can put important info for your topic.