True or False: if false, choose the answer that best corrects the statement.

Neurons are the only important cell type in the nervous system.

• A. True.
• B. False; both neurons and glial cells are important for nervous system function.
• C. False; there are hundreds of cell types in the nervous system, and all of them are important.
• D. False; glial cells are the most important cell type for nervous system function.