Ans. D. Supraclavicular nervesThe phrenic nerve consists of contributions from spinal nerve levels C3 to 5.Therefore, when sensory information comes from the parietal peritoneum on the inferior diaphragmatic surface, it may refer through spinal nerves at the same levels.a. Supraclavicular nerve shares levels with the C3 and C4 levels.b. The greater and lesser occipital nerves both originate at the C2 level.c. Great auricular nerve root value is C2, C3