Words clause and brought have similar spelling: clause is spelled 'klawz', and brought is spelled 'brawt'. So, both are spelled with 'aw'. On the other hand, their meaning is different.
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.
Answer: 1-8 is correct :)
good job