Which of the following is a site where the extracellular domains of claudins regulate paracellular transport:where dyneins bind microtubules in axons...

Which of the following is a site where the extracellular domains of claudins regulate paracellular transport:

a.where dyneins bind microtubules in axons located in the PNS

b.where astrocytes interact with ECM glycoproteins

c.where dendrites emerge from neuronal cell bodies located in the CNS

d.where ependymal cells interact with each other

e.where microglial cells initiate phagocytosis