Which of the following is an object associated with a table that sorts and stores table row data in a key-value pair?

A foreign key is a column or set of columns in a table that refers to the primary key in another table, used to enforce referential integrity, not to sort and store table row data.

A function is a block of reusable code that performs a specific task and returns a value, not an object that sorts and stores table row data.

A stored procedure is a prepared SQL code that you can save and reuse, used for executing a series of commands, not for sorting and storing table data.

A clustered index defines the physical order of data rows in the table and stores the actual table data at the leaf level of the index. When a table has a clustered index, the data rows are stored in sorted order based on the clustered index key, making the table itself sorted by that key-value pair. This provides efficient retrieval for queries that filter or sort by the clustered index columns.