Final answer:
The loss of a CDL on a first-time offense typically happens when being convicted of certain serious traffic violations. Accumulating points or failing a drug test can also lead to suspension, whereas not renewing the CDL leads to expiration.
Step-by-step explanation:
A first-time offense can result in the loss of a Commercial Driver's License (CDL) in several ways, but the correct answer to how a first-time offense can directly result in the loss of a CDL is By being convicted of certain serious traffic violations. Such offenses might include driving under the influence of alcohol or drugs, leaving the scene of an accident, or committing a felony with the vehicle. However, accumulating a certain number of points on the driving record or failing a drug or alcohol test can also lead to the suspension or revocation of a CDL. On the other hand, not renewing the CDL on time typically does not result in an immediate loss but rather leads to an expiration of the license, making it illegal to drive a commercial vehicle until the CDL is renewed.