Final answer:
Relational data storage organizes data into tables with columns and rows, and is distinguished by its use of unique keys to identify rows, and columns to represent data attributes.The correct option is A.
Step-by-step explanation:
The type of data storage characterized by tables with rows and columns is known as relational data storage. This model organizes data into one or more tables (or "relations") of columns and rows, with a unique key identifying each row. Rows in the table represent instances of an entity, and columns represent values attributed to that instance. For example, in a relational database for a school, you might have a table for students where each row is a different student and the columns include student ID, first name, last name, year level, etc.