Select the correct text in the passage.
Which sentence demonstrates the use of secondary market research technique?

Keith wants to start a fast-food stall. {{He interviewed people in the area where he wants to put up his stall}}. {{He also gave out questionnaires to understand people’s opinions}}. {{He worked out the cost and investment details with the help of the Internet}}. He is now all set to speak to the bank to apply for a business loan.

The ones with {{}} around are the 3 answer choices