Final answer:
The correct answer is b: respirator fit testing, and respiratory protection training.
Step-by-step explanation:
The requirements associated with the use of a tight fitting respirator include medical clearance, respirator fit testing, and training on the respiratory protection program. Therefore, the correct answer is b. respirator fit testing, and respiratory protection training.
Medical clearance ensures that the user is physically able to wear a respirator. A fit test is necessary to confirm that the model and size of the respirator provide a proper seal on the user's face. Finally, respiratory protection training provides the user with information on the proper use, maintenance, and limitations of the respirator.