Fenestrated capillaries
a. permit the movement of very few molecules.
b. are located in the central nervous system.
c. occur in most of the organs of the body.
d. have pores in their walls.

The Fenestrated capillaries permit the movement of very few molecules.

Explanation:

The Fenestrated capillaries are present in various tissues of body like kidney, endocrine glands, small intestine etc. They have pores in the endothelial cells of their membranes and allow exchange of molecules between blood and body tissue.  

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

c. movement because i took the test and it lets me review my answers