Final answer:
In a DBMS, a relation is most accurately referred to as a table, which organizes data into rows and columns. Attributes correspond to columns within a table.
Step-by-step explanation:
In a Database Management System (DBMS), a relation is most commonly referred to as a D.table. A relation is a set of tuples where each tuple represents a row in the table. The table is the structure that organizes data into rows and columns, with each column representing an attribute and each row representing a record.
Option A, an attribute, refers to a column within a table. Option B, a column, is a vertical entity in a table that contains all information associated with a specific field. Option C, a field, can also refer to a column, but is often used interchangeably with the term 'attribute'. However, the correct answer for what a relation can also be called is D, a table.