Final answer:
The purpose of cutting out the dorsal root ganglia is to relieve pain by disrupting the pain signals that are transmitted from the sensory neurons in the ganglia to the central nervous system.
Step-by-step explanation:
The dorsal root ganglia (DRG) contain the cell bodies of sensory neurons that transmit sensory information to the central nervous system (CNS). When the question asks about the purpose of cutting out the dorsal root ganglia, the correct answer is to relieve pain. This is because the DRG is involved in the transmission of pain signals to the brain, and removing it can disrupt the pain pathway, which is typically utilized in severe cases of neuropathic or intractable pain. This should not be confused with treatment of inflammation or repair of damaged tissue, which are not directly related to the removal of the DRG. Stimulation of nerve growth is also not achieved by removing the DRG.