Which of the following is true about survey research?
A) It involves sending observers to watch and interact with consumers in their natural environments.
B) It is best suited for gathering causal information.
C) It involves selecting matched groups of subjects, giving them different treatments, controlling related factors, and checking for differences in group responses.
D) The level of flexibility in survey research is lower than most other research methodologies.
E) Survey research is the most widely used method for primary data collection.
Answer: Survey research is the most widely used method for primary data collection.