Research is the collecting of information about a particular subject
It is important to do research on the internet or in the library about your question. Research is important for two reasons: (1) to give you information to predict the possible answer or make a hypothesis and (2) to ensure you don’t repeat mistakes made in similar experiments.
What could Sally research for this question?
Sally could research experiments done with soil types and their effect on plant growth. She could do an internet search on the best soil types for sunflower plants. She could look at how the experiments were conducted and their results.