Final answer:
Under the age of 18, you are not permitted to use a tanning bed at Level Three due to the associated health risks, such as skin cancer.
Step-by-step explanation:
At Level Three, if you are under the age of 18, you are not permitted to use a tanning bed. The restrictions on tanning bed usage by minors are in place due to health concerns, primarily the increased risk of skin cancer associated with ultraviolet (UV) radiation exposure from these devices. It is important for young people to understand these risks and adhere to safety regulations to protect their health.