Which SQL statement is used to remove a table from a database?

The SQL statement used to remove a table from a database is "DROP TABLE." This command effectively deletes the entire table structure and all data contained in it from the database. When you issue a DROP TABLE statement, it's a definitive action that cannot be undone; any associated data, indexes, and constraints are also permanently removed.

The command is straightforward in its purpose, and it's a fundamental part of SQL used in database management. Understanding this command is essential for database administration, especially when there’s a need to restructure a database or eliminate unnecessary tables to optimize performance or workflows.

In contrast, the other options presented have different functions: "DELETE TABLE" is not a valid SQL command; "REMOVE TABLE" does not exist in standard SQL syntax; and "ALTER TABLE" is used to modify an existing table's structure (such as adding columns or changing data types) rather than removing the entire table.