Which statement is correct? Flat files use foreign keys to uniquely identify tables.

Flat files use foreign keys to secure data.

A foreign key is a primary key in another table.

A foreign key uniquely identifies a record in a table.

Janice usually works on a particular workbook that contains all business related data. she decides to keep a backup of all the data in a separate workbook. she opens a new workbook to transfer the data. which option should she use to copy all the data from one workbook to another workbook?