According to MRI safety standards, "Level 1" personnel are defined as:

"Level 1" personnel in MRI safety standards refers to individuals who have received some training in MRI safety but do not possess extensive knowledge or experience in the field. They are generally familiar with basic safety protocols and are capable of identifying hazards related to the MRI environment, such as the presence of a strong magnetic field and certain risks associated with ferromagnetic objects.

This definition is in line with the common framework used for categorizing personnel in MRI settings. Level 1 personnel typically include those who may work in proximity to an MRI scanner but are not directly responsible for scanning or managing the MRI environment. Their limited training helps ensure safety, as they are aware of the potential risks and can respond appropriately in case of an emergency.

Higher levels, such as Level 2, involve more comprehensive and specialized training, enabling personnel to undertake a direct involvement in MRI procedures, while those with no training at all would not be classified even as Level 1. Therefore, the correct choice aligns with the general understanding of Level 1 personnel and their role in MRI safety.