The category of SQL command that is not included among the options is option B) SCL.
TCL (Transaction Control Language) commands are used to manage transactions in SQL, ensuring data consistency and integrity.
DCL (Data Control Language) commands are used for managing permissions and security in SQL, controlling access to the database.
DDL (Data Definition Language) commands are used to define and modify the structure of the database, such as creating tables and altering schema.
However, SCL is not a recognized category of SQL commands, making it the correct choice as the option that is not a category of SQL command.