Answer:
1. Exploratory research
Used to better define a problem or scout opportunities.
In-depth interviews and discussions groups are commonly used.
2. Descriptive research
Used to assess a situation in the marketplace (i.e., potential for a specific product or consumer attitudes).
Methods include personal interviews and surveys.
3. Causal research
Used for testing cause and effect relationships.
Typically through estimation.
No context to properly answer question
There isn't really a right answer to this, it's more opinion based. What did you cover in class? If its relating to foodborne illness and sanitation then you could say, "One fact that I thought was most important was to avoid cross contamination with certain foods like poultry or raw eggs"