The answer is: A. subway
When we buy a franchise , we are required to follow the business format that already proven by the franchise owners.
If you want to be in a food business but lack management training, opening a franchise such as subway might be the best solution since they would train both you and the workers that you hire to uphold the standard that have been implemented by the franchise owners.
From this, Ricardo could learn about the business tactics that are proven to work in the market before opening his own brand.