Final answer:
The correct position to ensure safety and comfort for circumferential burns of the extremities is prone.
Step-by-step explanation:
The correct position to ensure safety and comfort for circumferential burns of the extremities is b) Prone.
When a person is prone, they lie flat on their stomach with their upper limbs, including palms, touching the sides and lower limbs touching at the sides. This position helps to relieve pressure on the burned areas and promotes healing.