The answer is 1, the 3rd circle
A. B)
B. B) 1837 Douglass joins the East Baltimore Improvement Society
C. A) offers effects when moving from one slide to the next.
Hope this helps!!
The answer is a
relational database.
A data model in database management system consists of rules
that define how the DB organizes data. Today, a relational database is widely
used. It is a collection of data items organized as a set of formally described
tables from which data can be accessed in many different ways.