Final answer:
In most relational DBMSs, the role of a specific language is to either define and manage the structure of the database (DDL) or manipulate the data within the database (DML).
Step-by-step explanation:
In most relational DBMSs, the specific language that performs the role of DDL (Data Definition Language) is used to define and manage the structure of the database. DDL includes commands such as CREATE, ALTER, and DROP to create, modify, and delete database objects like tables and indexes.
On the other hand, DML (Data Manipulation Language) is used to retrieve, insert, update, and delete data within the database. DML includes commands such as SELECT, INSERT, UPDATE, and DELETE.
Therefore, the correct option for the role that the specific language performs is B) DML as it deals with manipulating the data within the database.