Question

are tiny finger like projections on some cell surfaces that increase the surface area for absorption of materials.
cilia
microtubules
microvilli
flagella

Explanation:

Microvilli are tiny finger-like projections on cell surfaces that primarily function to increase surface area for absorption of materials. Cilia and flagella are involved in movement, while microtubules are structural components of the cytoskeleton.

Answer:

C. Microvilli