How did deregulation ultimately result in more banking services for consumers?

Deregulation results in more banking services for consumers because the banks are left to themselves to determine a whole lot. They may decide to explore more areas in the banking sector to appeal to more and more consumers or give consumers more choices without government interference. When the government is not in control the market economy relies heavily on the customers -- customer is king! The banks wants more and more customers so they may launch new products, set prices according to current demand and supply, or offer incentives for new customers.

The correct answer is "c. a limited partnership without a general power".