Final answer:
The patient is positioned prone with arms at sides for CT exams of the chest.
Step-by-step explanation:
The correct answer is:
- prone with arms at sides
For CT exams of the chest, the patient is usually positioned in the prone position with their arms at their sides. The prone position means lying face down, and it allows for optimal imaging of the chest area. This position helps to create clear and accurate images of the chest structures like the heart, lungs, and other organs.