Answer:
C. They can be accessed quickly and cheaply.
Explanation:
An internal database is information that can be obtained inside the company through internal networks. This information can be easy to get as it is in the network of the company and you have access to it and it also have a low cost as you don't have pay money to get it. According to this, the answer is that an advantage to using internal databases for information is that they can be accessed quickly and cheaply.
The other options are not right because internal information can be outdated and incomplete if it is not updated by people in the company and it can be found in different forms and it is not always easy to manage as this depends on the applications used and how the company decides to visualize it.
