Final answer:
The minimum PPE for performing x-rays consists of a lead gown and thyroid collar.
Step-by-step explanation:
The minimum PPE that must be worn when performing x-rays is option (B) - Lead gown and thyroid collar.
According to the given information and references, shielding is an important measure to protect against radiation. Lead is an effective material in absorbing radiation, and a lead gown provides general protection to the body. Additionally, a thyroid collar is necessary to protect the thyroid gland, which is sensitive to radiation exposure.
While lead gloves and goggles can provide further protection, they are not part of the minimum PPE requirement for performing x-rays.