The cns-associated structure in the figure is illustrating a Choroid plexus. Hence, the answer is Choroid plexus. Read below about Choroid plexus.
A Choroid Plexus is a network of blood vessels and cells in the ventricles (fluid-filled spaces) of the brain. The blood vessels are covered by a thin layer of cells that make cerebrospinal fluid.
Therefore, the correct answer is Choroid plexus.
learn more about Choroid plexus function: https://brainly.com/question/11382230
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