Discretionary access control is an approach whereby the organization specifies use of resources based on the assignment of data classification schemes to resources and clearance levels to users.

This statement is false. This is the work of Mandatory Access controls (MACs)

Explanation:

Discretionary Access Control (DACL) is an example of Access Control Model (ACL) found in objects of a data user in a computer system. They are security descriptors that issue a list of permissions to users, i.e. who has permissions to access an object. It is discretionary as the name suggest to mean which users have permissions to what files on a windows or linux environment.

On the other hand, Mandatory Access controls (MACs) is an approach whereby the organization specifies the use of resources based on the assignment of data classification schemes to resources and clearance levels to users. It is non-discretionary and is based on how the operating system makes decisions on a security label system. The operating systems grants or disallow access rather than the data owners. They are used so much where classification and confidentiality is of utmost importance