1._________ are membrane protrusions that facilitate the absorption of nutrients. What is the name of these protrusions and what cytoskeletal element forms their internal skeleton?
(A) Microvilli, microtubules
(B) Microvilli, actin filaments
(C) Microvilli, intermediate filaments
(D) Villi, microtubules
(E) Villi, actin filaments
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