Periodically reviewing controls to verify that they still function as intended, upgrading controls when new requirements are discovered, ensuring that changes to systems do not adversely affect the controls, and ensuring new threats or vulnerabilities have not become known are all tasks.

so you know what happened be fore you were alive

explanation:

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

c is the newer have a great day

answer; an active listener;