Which is true about the use of drug testing as a pre -employment screening tool? Companies must follow government laws and internal company policies when using drug tests to screen job applicants. Companies can choose to only test a subset of job applicants (for example men under 25 years who have a disability). All of the above. It is illegal to ask job applicants to take a drug test.

The correct answer is: Companies must follow government laws and internal company policies when using drug tests to screen job applicants.<br /><br />Explanation: When using drug testing as a pre-employment screening tool, companies must adhere to government laws and regulations, as well as their own internal company policies. This ensures that the drug testing process is fair, legal, and consistent with the company's standards and requirements.